111212011012120 has 64 divisors (see below), whose sum is σ = 263731554316800. Its totient is φ = 42089949129600.

The previous prime is 111212011011977. The next prime is 111212011012159. The reversal of 111212011012120 is 21210110212111.

It is a super-2 number, since 2×111212011012120² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212011012094 and 111212011012103.

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, 92369856 + ... + 93566095.

It is an arithmetic number, because the mean of its divisors is an integer number (4120805536200).

Almost surely, 2^{111212011012120} is an apocalyptic number.

111212011012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212011012120 is an abundant number, since it is smaller than the sum of its proper divisors (152519543304680).

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

111212011012120 is a wasteful number, since it uses less digits than its factorization.

111212011012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185936768 (or 185936764 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111212011012120 its reverse (21210110212111), we get a palindrome (132422121224231).

The spelling of 111212011012120 in words is "one hundred eleven trillion, two hundred twelve billion, eleven million, twelve thousand, one hundred twenty".