111243112020 has 96 divisors (see below), whose sum is σ = 358023859200. Its totient is φ = 28641900672.

The previous prime is 111243111961. The next prime is 111243112039. The reversal of 111243112020 is 20211342111.

111243112020 is a `hidden beast` number, since 1 + 112 + 431 + 120 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111243111984 and 111243112002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3536164 + ... + 3567483.

It is an arithmetic number, because the mean of its divisors is an integer number (3729415200).

Almost surely, 2^111243112020 is an apocalyptic number.

111243112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111243112020 is an abundant number, since it is smaller than the sum of its proper divisors (246780747180).

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

111243112020 is a wasteful number, since it uses less digits than its factorization.

111243112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7103694 (or 7103686 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111243112020 its reverse (20211342111), we get a palindrome (131454454131).

The spelling of 111243112020 in words is "one hundred eleven billion, two hundred forty-three million, one hundred twelve thousand, twenty".