202100001012 has 72 divisors (see below), whose sum is σ = 628755568896. Its totient is φ = 53301098304.

The previous prime is 202100000929. The next prime is 202100001017. The reversal of 202100001012 is 210100001202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 202100000985 and 202100001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100001017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30842268 + ... + 30848819.

Almost surely, 2^202100001012 is an apocalyptic number.

It is an amenable number.

202100001012 is an abundant number, since it is smaller than the sum of its proper divisors (426655567884).

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

202100001012 is a wasteful number, since it uses less digits than its factorization.

202100001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61691117 (or 61691112 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 202100001012 its reverse (210100001202), we get a palindrome (412200002214).

The spelling of 202100001012 in words is "two hundred two billion, one hundred million, one thousand, twelve".