2021202121100 has 18 divisors (see below), whose sum is σ = 4386008603004. Its totient is φ = 808480848400.

The previous prime is 2021202121073. The next prime is 2021202121111. The reversal of 2021202121100 is 11212021202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10106010506 + ... + 10106010705.

Almost surely, 2^{2021202121100} is an apocalyptic number.

2021202121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021202121100 is an abundant number, since it is smaller than the sum of its proper divisors (2364806481904).

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

2021202121100 is a wasteful number, since it uses less digits than its factorization.

2021202121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20212021225 (or 20212021218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021202121100 its reverse (11212021202), we get a palindrome (2032414142302).

The spelling of 2021202121100 in words is "two trillion, twenty-one billion, two hundred two million, one hundred twenty-one thousand, one hundred".