100111201220 has 48 divisors (see below), whose sum is σ = 211145356800. Its totient is φ = 39871023360.

The previous prime is 100111201219. The next prime is 100111201243. The reversal of 100111201220 is 22102111001.

It is a super-2 number, since 2×100111201220² (a number of 23 digits) contains 22 as substring.

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, 8080991 + ... + 8093369.

It is an arithmetic number, because the mean of its divisors is an integer number (4398861600).

Almost surely, 2^100111201220 is an apocalyptic number.

100111201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111201220 is an abundant number, since it is smaller than the sum of its proper divisors (111034155580).

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

100111201220 is a wasteful number, since it uses less digits than its factorization.

100111201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14108 (or 14106 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100111201220 its reverse (22102111001), we get a palindrome (122213312221).

The spelling of 100111201220 in words is "one hundred billion, one hundred eleven million, two hundred one thousand, two hundred twenty".