111011020012020 has 96 divisors (see below), whose sum is σ = 313913131701120. Its totient is φ = 29309397465600.

The previous prime is 111011020012007. The next prime is 111011020012033. The reversal of 111011020012020 is 20210020110111.

It is an interprime number because it is at equal distance from previous prime (111011020012007) and next prime (111011020012033).

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 = 111011020011987 and 111011020012005.

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, 663965154 + ... + 664132326.

It is an arithmetic number, because the mean of its divisors is an integer number (3269928455220).

Almost surely, 2^{111011020012020} is an apocalyptic number.

111011020012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111011020012020 is an abundant number, since it is smaller than the sum of its proper divisors (202902111689100).

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

111011020012020 is a wasteful number, since it uses less digits than its factorization.

111011020012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276865 (or 276863 counting only the distinct ones).

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

Adding to 111011020012020 its reverse (20210020110111), we get a palindrome (131221040122131).

The spelling of 111011020012020 in words is "one hundred eleven trillion, eleven billion, twenty million, twelve thousand, twenty".