111210021010020 has 24 divisors (see below), whose sum is σ = 311388058828224. Its totient is φ = 29656005602656.

The previous prime is 111210021009931. The next prime is 111210021010027. The reversal of 111210021010020 is 20010120012111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111210021009978 and 111210021010005.

It is not an unprimeable number, because it can be changed into a prime (111210021010027) 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, 926750175024 + ... + 926750175143.

It is an arithmetic number, because the mean of its divisors is an integer number (12974502451176).

Almost surely, 2^{111210021010020} is an apocalyptic number.

111210021010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210021010020 is an abundant number, since it is smaller than the sum of its proper divisors (200178037818204).

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

111210021010020 is a wasteful number, since it uses less digits than its factorization.

111210021010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853500350179 (or 1853500350177 counting only the distinct ones).

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

Adding to 111210021010020 its reverse (20010120012111), we get a palindrome (131220141022131).

The spelling of 111210021010020 in words is "one hundred eleven trillion, two hundred ten billion, twenty-one million, ten thousand, twenty".