111001100102020 has 48 divisors (see below), whose sum is σ = 235129571874288. Its totient is φ = 44015842644480.

The previous prime is 111001100102017. The next prime is 111001100102041. The reversal of 111001100102020 is 20201001100111.

It can be written as a sum of positive squares in 8 ways, for example, as 52154741886976 + 58846358215044 = 7221824^2 + 7671138^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111001100101988 and 111001100102006.

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, 47217267 + ... + 49512346.

It is an arithmetic number, because the mean of its divisors is an integer number (4898532747381).

Almost surely, 2^{111001100102020} is an apocalyptic number.

111001100102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001100102020 is an abundant number, since it is smaller than the sum of its proper divisors (124128471772268).

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

111001100102020 is a wasteful number, since it uses less digits than its factorization.

111001100102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96730120 (or 96730118 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111001100102020 its reverse (20201001100111), we get a palindrome (131202101202131).

The spelling of 111001100102020 in words is "one hundred eleven trillion, one billion, one hundred million, one hundred two thousand, twenty".