202012221210 has 32 divisors (see below), whose sum is σ = 487265673600. Its totient is φ = 53599220928.

The previous prime is 202012221209. The next prime is 202012221221. The reversal of 202012221210 is 12122210202.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 202012221210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16912977 + ... + 16924916.

It is an arithmetic number, because the mean of its divisors is an integer number (15227052300).

Almost surely, 2^202012221210 is an apocalyptic number.

202012221210 is an abundant number, since it is smaller than the sum of its proper divisors (285253452390).

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

202012221210 is a wasteful number, since it uses less digits than its factorization.

202012221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33838102.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202012221210 its reverse (12122210202), we get a palindrome (214134431412).

The spelling of 202012221210 in words is "two hundred two billion, twelve million, two hundred twenty-one thousand, two hundred ten".