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1220102111100 = 223524394581559
BaseRepresentation
bin10001110000010011110…
…000001011111101111100
311022122022000101011022210
4101300103300023331330
5124442232120023400
62332301314340420
7154102160553645
oct21602360137574
94278260334283
101220102111100
11430495919754
1217856988a710
138b094194cc2
14430a61d06cc
1521b0e8c6950
hex11c13c0bf7c

1220102111100 has 72 divisors (see below), whose sum is σ = 3612258939520. Its totient is φ = 317794034880.

The previous prime is 1220102111029. The next prime is 1220102111101. The reversal of 1220102111100 is 11112010221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220102111101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47277880 + ... + 47303679.

Almost surely, 21220102111100 is an apocalyptic number.

1220102111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220102111100 is an abundant number, since it is smaller than the sum of its proper divisors (2392156828420).

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

1220102111100 is a wasteful number, since it uses less digits than its factorization.

1220102111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94581619 (or 94581612 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1220102111100 its reverse (11112010221), we get a palindrome (1231214121321).

The spelling of 1220102111100 in words is "one trillion, two hundred twenty billion, one hundred two million, one hundred eleven thousand, one hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 43 50 60 75 86 100 129 150 172 215 258 300 430 516 645 860 1075 1290 2150 2580 3225 4300 6450 12900 94581559 189163118 283744677 378326236 472907795 567489354 945815590 1134978708 1418723385 1891631180 2364538975 2837446770 4067007037 4729077950 5674893540 7093616925 8134014074 9458155900 12201021111 14187233850 16268028148 20335035185 24402042222 28374467700 40670070370 48804084444 61005105555 81340140740 101675175925 122010211110 203350351850 244020422220 305025527775 406700703700 610051055550 1220102111100