202102022122100 has 36 divisors (see below), whose sum is σ = 438562037944044. Its totient is φ = 80840689044480.

The previous prime is 202102022122087. The next prime is 202102022122141. The reversal of 202102022122100 is 1221220201202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 46540611796624 + 155561410325476 = 6822068^2 + 12472426^2 .

It is a congruent number.

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, 101691524 + ... + 103659876.

It is an arithmetic number, because the mean of its divisors is an integer number (12182278831779).

Almost surely, 2^{202102022122100} is an apocalyptic number.

202102022122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102022122100 is an abundant number, since it is smaller than the sum of its proper divisors (236460015821944).

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

202102022122100 is a wasteful number, since it uses less digits than its factorization.

202102022122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995124 (or 2995117 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202102022122100 its reverse (1221220201202), we get a palindrome (203323242323302).

The spelling of 202102022122100 in words is "two hundred two trillion, one hundred two billion, twenty-two million, one hundred twenty-two thousand, one hundred".