111021100010020 has 12 divisors (see below), whose sum is σ = 233144310021084. Its totient is φ = 44408440004000.

The previous prime is 111021100009999. The next prime is 111021100010033. The reversal of 111021100010020 is 20010001120111.

111021100010020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 84526546844224 + 26494553165796 = 9193832^2 + 5147286^2 .

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 = 111021100009979 and 111021100010006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775527500231 + ... + 2775527500270.

It is an arithmetic number, because the mean of its divisors is an integer number (19428692501757).

Almost surely, 2^{111021100010020} is an apocalyptic number.

111021100010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021100010020 is an abundant number, since it is smaller than the sum of its proper divisors (122123210011064).

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

111021100010020 is a wasteful number, since it uses less digits than its factorization.

111021100010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551055000510 (or 5551055000508 counting only the distinct ones).

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

Adding to 111021100010020 its reverse (20010001120111), we get a palindrome (131031101130131).

The spelling of 111021100010020 in words is "one hundred eleven trillion, twenty-one billion, one hundred million, ten thousand, twenty".