202101102022100 has 18 divisors (see below), whose sum is σ = 438559391388174. Its totient is φ = 80840440808800.

The previous prime is 202101102022097. The next prime is 202101102022139. The reversal of 202101102022100 is 1220201101202.

It can be written as a sum of positive squares in 3 ways, for example, as 58385553409936 + 143715548612164 = 7641044^2 + 11988142^2 .

It is a congruent number.

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, 1010505510011 + ... + 1010505510210.

Almost surely, 2^{202101102022100} is an apocalyptic number.

202101102022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101102022100 is an abundant number, since it is smaller than the sum of its proper divisors (236458289366074).

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

202101102022100 is a wasteful number, since it uses less digits than its factorization.

202101102022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021011020235 (or 2021011020228 counting only the distinct ones).

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

Adding to 202101102022100 its reverse (1220201101202), we get a palindrome (203321303123302).

The spelling of 202101102022100 in words is "two hundred two trillion, one hundred one billion, one hundred two million, twenty-two thousand, one hundred".