202111021020100 has 36 divisors (see below), whose sum is σ = 438791468593744. Its totient is φ = 80805596798880.

The previous prime is 202111021020071. The next prime is 202111021020131. The reversal of 202111021020100 is 1020120111202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484935774 + ... + 485352373.

Almost surely, 2^{202111021020100} is an apocalyptic number.

202111021020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202111021020100 is an abundant number, since it is smaller than the sum of its proper divisors (236680447573644).

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

202111021020100 is a wasteful number, since it uses less digits than its factorization.

202111021020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970290244 (or 970290237 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 202111021020100 its reverse (1020120111202), we get a palindrome (203131141131302).

The spelling of 202111021020100 in words is "two hundred two trillion, one hundred eleven billion, twenty-one million, twenty thousand, one hundred".