111200102120 has 32 divisors (see below), whose sum is σ = 258827826600. Its totient is φ = 42946245888.

The previous prime is 111200102113. The next prime is 111200102131. The reversal of 111200102120 is 21201002111.

It can be written as a sum of positive squares in 4 ways, for example, as 110515023844 + 685078276 = 332438^2 + 26174^2 .

It is a super-2 number, since 2×111200102120² (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 7 ways as a sum of consecutive naturals, for example, 47929919 + ... + 47932238.

Almost surely, 2^111200102120 is an apocalyptic number.

111200102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200102120 is an abundant number, since it is smaller than the sum of its proper divisors (147627724480).

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

111200102120 is a wasteful number, since it uses less digits than its factorization.

111200102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95862197 (or 95862193 counting only the distinct ones).

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

Adding to 111200102120 its reverse (21201002111), we get a palindrome (132401104231).

The spelling of 111200102120 in words is "one hundred eleven billion, two hundred million, one hundred two thousand, one hundred twenty".