202120202211100 has 36 divisors (see below), whose sum is σ = 438619293493864. Its totient is φ = 80844679097280.

The previous prime is 202120202211071. The next prime is 202120202211173. The reversal of 202120202211100 is 1112202021202.

It is a happy number.

It is a super-2 number, since 2×202120202211100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40133154 + ... + 44887753.

Almost surely, 2^{202120202211100} is an apocalyptic number.

202120202211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120202211100 is an abundant number, since it is smaller than the sum of its proper divisors (236499091282764).

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

202120202211100 is a wasteful number, since it uses less digits than its factorization.

202120202211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85044694 (or 85044687 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202120202211100 its reverse (1112202021202), we get a palindrome (203232404232302).

The spelling of 202120202211100 in words is "two hundred two trillion, one hundred twenty billion, two hundred two million, two hundred eleven thousand, one hundred".