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11211122202020 = 225132343271160883
BaseRepresentation
bin1010001100100100101011…
…1101001101010110100100
31110200202212101022202200222
42203021022331031112210
52432140334240431040
635502152441023512
72234656026245306
oct243111275152644
943622771282628
1011211122202020
113632679234104
12131095a184b98
13634286a85b50
142aa89a857976
151469612aabb5
hexa324af4d5a4

11211122202020 has 192 divisors, whose sum is σ = 27172087455744. Its totient is φ = 3853136770560.

The previous prime is 11211122202001. The next prime is 11211122202031. The reversal of 11211122202020 is 2020222111211.

It is a super-2 number, since 2×112111222020202 (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11211122202020.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69604499 + ... + 69765381.

It is an arithmetic number, because the mean of its divisors is an integer number (141521288832).

Almost surely, 211211122202020 is an apocalyptic number.

11211122202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11211122202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13586043727872).

11211122202020 is an abundant number, since it is smaller than the sum of its proper divisors (15960965253724).

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

11211122202020 is a wasteful number, since it uses less digits than its factorization.

11211122202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161242 (or 161240 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11211122202020 its reverse (2020222111211), we get a palindrome (13231344313231).

The spelling of 11211122202020 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-two million, two hundred two thousand, twenty".