111021010320 has 160 divisors (see below), whose sum is σ = 384610633344. Its totient is φ = 26257715200.

The previous prime is 111021010291. The next prime is 111021010333. The reversal of 111021010320 is 23010120111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111021010296 and 111021010305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404607 + ... + 621086.

Almost surely, 2^111021010320 is an apocalyptic number.

111021010320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021010320 is an abundant number, since it is smaller than the sum of its proper divisors (273589623024).

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

111021010320 is a wasteful number, since it uses less digits than its factorization.

111021010320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025761 (or 1025755 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 111021010320 its reverse (23010120111), we get a palindrome (134031130431).

The spelling of 111021010320 in words is "one hundred eleven billion, twenty-one million, ten thousand, three hundred twenty".