111122021120 has 72 divisors (see below), whose sum is σ = 290369454480. Its totient is φ = 40408002560.

The previous prime is 111122021111. The next prime is 111122021141. The reversal of 111122021120 is 21120221111.

It is a junction number, because it is equal to n+sod(n) for n = 111122021095 and 111122021104.

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, 3932015 + ... + 3960174.

It is an arithmetic number, because the mean of its divisors is an integer number (4032909090).

Almost surely, 2^111122021120 is an apocalyptic number.

111122021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122021120 is an abundant number, since it is smaller than the sum of its proper divisors (179247433360).

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

111122021120 is an equidigital number, since it uses as much as digits as its factorization.

111122021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892221 (or 7892207 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111122021120 its reverse (21120221111), we get a palindrome (132242242231).

Subtracting from 111122021120 its reverse (21120221111), we obtain a square (90001800009 = 300003²).

The spelling of 111122021120 in words is "one hundred eleven billion, one hundred twenty-two million, twenty-one thousand, one hundred twenty".