202012223100 has 36 divisors (see below), whose sum is σ = 584488699704. Its totient is φ = 53869926080.

The previous prime is 202012223093. The next prime is 202012223117. The reversal of 202012223100 is 1322210202.

It is a happy number.

It is a super-2 number, since 2×202012223100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202012223100.

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, 336686739 + ... + 336687338.

It is an arithmetic number, because the mean of its divisors is an integer number (16235797214).

Almost surely, 2^202012223100 is an apocalyptic number.

202012223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202012223100 is an abundant number, since it is smaller than the sum of its proper divisors (382476476604).

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

202012223100 is a wasteful number, since it uses less digits than its factorization.

202012223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673374094 (or 673374087 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 202012223100 its reverse (1322210202), we get a palindrome (203334433302).

The spelling of 202012223100 in words is "two hundred two billion, twelve million, two hundred twenty-three thousand, one hundred".