202201222122100 has 36 divisors (see below), whose sum is σ = 439347232993900. Its totient is φ = 80775312629760.

The previous prime is 202201222122083. The next prime is 202201222122103. The reversal of 202201222122100 is 1221222102202.

It can be written as a sum of positive squares in 6 ways, for example, as 44044087911184 + 158157134210916 = 6636572^2 + 12576054^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201222122103) 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, 1314625455 + ... + 1314779254.

Almost surely, 2^{202201222122100} is an apocalyptic number.

202201222122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202201222122100 is an abundant number, since it is smaller than the sum of its proper divisors (237146010871800).

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

202201222122100 is a wasteful number, since it uses less digits than its factorization.

202201222122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629405492 (or 2629405485 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202201222122100 its reverse (1221222102202), we get a palindrome (203422444224302).

The spelling of 202201222122100 in words is "two hundred two trillion, two hundred one billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred".