202012020021100 has 18 divisors (see below), whose sum is σ = 438366083446004. Its totient is φ = 80804808008400.

The previous prime is 202012020020963. The next prime is 202012020021101. The reversal of 202012020021100 is 1120020210202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (202012020021101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1010060100006 + ... + 1010060100205.

Almost surely, 2^{202012020021100} is an apocalyptic number.

202012020021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202012020021100 is an abundant number, since it is smaller than the sum of its proper divisors (236354063424904).

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

202012020021100 is a wasteful number, since it uses less digits than its factorization.

202012020021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020120200225 (or 2020120200218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202012020021100 its reverse (1120020210202), we get a palindrome (203132040231302).

The spelling of 202012020021100 in words is "two hundred two trillion, twelve billion, twenty million, twenty-one thousand, one hundred".