111212220120 has 32 divisors (see below), whose sum is σ = 333636660720. Its totient is φ = 29656592000.

The previous prime is 111212220113. The next prime is 111212220131. The reversal of 111212220120 is 21022212111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111212220120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463384131 + ... + 463384370.

Almost surely, 2^111212220120 is an apocalyptic number.

111212220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212220120 is an abundant number, since it is smaller than the sum of its proper divisors (222424440600).

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

111212220120 is a wasteful number, since it uses less digits than its factorization.

111212220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926768515 (or 926768511 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111212220120 its reverse (21022212111), we get a palindrome (132234432231).

The spelling of 111212220120 in words is "one hundred eleven billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty".