111002120 has 32 divisors (see below), whose sum is σ = 250585920. Its totient is φ = 44253120.

The previous prime is 111002107. The next prime is 111002137. The reversal of 111002120 is 21200111.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 111002098 and 111002107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7979 + ... + 16901.

It is an arithmetic number, because the mean of its divisors is an integer number (7830810).

Almost surely, 2^111002120 is an apocalyptic number.

111002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111002120 is an abundant number, since it is smaller than the sum of its proper divisors (139583800).

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

111002120 is a wasteful number, since it uses less digits than its factorization.

111002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9245 (or 9241 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 111002120 is about 10535.7543631199. The cubic root of 111002120 is about 480.5926129602.

Adding to 111002120 its reverse (21200111), we get a palindrome (132202231).

The spelling of 111002120 in words is "one hundred eleven million, two thousand, one hundred twenty".