202021122100100 has 36 divisors (see below), whose sum is σ = 438494052532368. Its totient is φ = 80788500900000.

The previous prime is 202021122100099. The next prime is 202021122100103. The reversal of 202021122100100 is 1001221120202.

It is not an unprimeable number, because it can be changed into a prime (202021122100103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248942126 + ... + 249752325.

Almost surely, 2^{202021122100100} is an apocalyptic number.

202021122100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202021122100100 is an abundant number, since it is smaller than the sum of its proper divisors (236472930432268).

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

202021122100100 is a wasteful number, since it uses less digits than its factorization.

202021122100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498698516 (or 498698509 counting only the distinct ones).

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

Adding to 202021122100100 its reverse (1001221120202), we get a palindrome (203022343220302).

The spelling of 202021122100100 in words is "two hundred two trillion, twenty-one billion, one hundred twenty-two million, one hundred thousand, one hundred".