111012021320 has 32 divisors (see below), whose sum is σ = 254489827320. Its totient is φ = 43566981120.

The previous prime is 111012021319. The next prime is 111012021331. The reversal of 111012021320 is 23120210111.

It can be written as a sum of positive squares in 4 ways, for example, as 97897648996 + 13114372324 = 312886^2 + 114518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111012021295 and 111012021304.

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, 26179961 + ... + 26184200.

Almost surely, 2^111012021320 is an apocalyptic number.

111012021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012021320 is an abundant number, since it is smaller than the sum of its proper divisors (143477806000).

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

111012021320 is a wasteful number, since it uses less digits than its factorization.

111012021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52364225 (or 52364221 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 111012021320 its reverse (23120210111), we get a palindrome (134132231431).

The spelling of 111012021320 in words is "one hundred eleven billion, twelve million, twenty-one thousand, three hundred twenty".