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12211100012220 = 2235375500495501
BaseRepresentation
bin1011000110110001111001…
…0001110100111010111100
31121020100222112222211111120
42301230132101310322330
53100031313100342340
641545411335550540
72400136304345124
oct261543621647274
947210875884446
1012211100012220
11398877568351a
12145271482b450
136a766a582615
1430303dd65c84
1516298aadc4d0
hexb1b1e474ebc

12211100012220 has 48 divisors (see below), whose sum is σ = 35115163284768. Its totient is φ = 3168285408000.

The previous prime is 12211100012173. The next prime is 12211100012261. The reversal of 12211100012220 is 2221000111221.

It is a super-2 number, since 2×122111000122202 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12211100012220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2750245531 + ... + 2750249970.

It is an arithmetic number, because the mean of its divisors is an integer number (731565901766).

Almost surely, 212211100012220 is an apocalyptic number.

12211100012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211100012220 is an abundant number, since it is smaller than the sum of its proper divisors (22904063272548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211100012220 is a wasteful number, since it uses less digits than its factorization.

12211100012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500495550 (or 5500495548 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12211100012220 its reverse (2221000111221), we get a palindrome (14432100123441).

Subtracting from 12211100012220 its reverse (2221000111221), we obtain a palindrome (9990099900999).

The spelling of 12211100012220 in words is "twelve trillion, two hundred eleven billion, one hundred million, twelve thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 37 60 74 111 148 185 222 370 444 555 740 1110 2220 5500495501 11000991002 16501486503 22001982004 27502477505 33002973006 55004955010 66005946012 82507432515 110009910020 165014865030 203518333537 330029730060 407036667074 610555000611 814073334148 1017591667685 1221110001222 2035183335370 2442220002444 3052775003055 4070366670740 6105550006110 12211100012220