111121010122220 has 96 divisors (see below), whose sum is σ = 280911573196800. Its totient is φ = 36869643840960.

The previous prime is 111121010122211. The next prime is 111121010122229. The reversal of 111121010122220 is 22221010121111.

111121010122220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (111121010122211) and next prime (111121010122229).

It is not an unprimeable number, because it can be changed into a prime (111121010122229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261051824 + ... + 261477143.

It is an arithmetic number, because the mean of its divisors is an integer number (2926162220800).

Almost surely, 2^{111121010122220} is an apocalyptic number.

111121010122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121010122220 is an abundant number, since it is smaller than the sum of its proper divisors (169790563074580).

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

111121010122220 is a wasteful number, since it uses less digits than its factorization.

111121010122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522529028 (or 522529012 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111121010122220 its reverse (22221010121111), we get a palindrome (133342020243331).

The spelling of 111121010122220 in words is "one hundred eleven trillion, one hundred twenty-one billion, ten million, one hundred twenty-two thousand, two hundred twenty".