111210021012 has 24 divisors (see below), whose sum is σ = 260324430912. Its totient is φ = 36950809600.

The previous prime is 111210021011. The next prime is 111210021079. The reversal of 111210021012 is 210120012111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210021011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14895789 + ... + 14903252.

It is an arithmetic number, because the mean of its divisors is an integer number (10846851288).

Almost surely, 2^111210021012 is an apocalyptic number.

111210021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111210021012 is an abundant number, since it is smaller than the sum of its proper divisors (149114409900).

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

111210021012 is a wasteful number, since it uses less digits than its factorization.

111210021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29799359 (or 29799357 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111210021012 its reverse (210120012111), we get a palindrome (321330033123).

The spelling of 111210021012 in words is "one hundred eleven billion, two hundred ten million, twenty-one thousand, twelve".