111012231020 has 48 divisors (see below), whose sum is σ = 243317753280. Its totient is φ = 42464438016.

The previous prime is 111012231007. The next prime is 111012231037. The reversal of 111012231020 is 20132210111.

It is a junction number, because it is equal to n+sod(n) for n = 111012230986 and 111012231004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2151686 + ... + 2202674.

It is an arithmetic number, because the mean of its divisors is an integer number (5069119860).

Almost surely, 2^111012231020 is an apocalyptic number.

111012231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012231020 is an abundant number, since it is smaller than the sum of its proper divisors (132305522260).

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

111012231020 is a wasteful number, since it uses less digits than its factorization.

111012231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55754 (or 55752 counting only the distinct ones).

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

Adding to 111012231020 its reverse (20132210111), we get a palindrome (131144441131).

The spelling of 111012231020 in words is "one hundred eleven billion, twelve million, two hundred thirty-one thousand, twenty".