22202121210 has 64 divisors (see below), whose sum is σ = 57944408832. Its totient is φ = 5421689856.

The previous prime is 22202121209. The next prime is 22202121239. The reversal of 22202121210 is 1212120222.

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 22202121210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 569422 + ... + 607161.

It is an arithmetic number, because the mean of its divisors is an integer number (905381388).

Almost surely, 2^22202121210 is an apocalyptic number.

22202121210 is an abundant number, since it is smaller than the sum of its proper divisors (35742287622).

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

22202121210 is a wasteful number, since it uses less digits than its factorization.

22202121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176647.

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

Adding to 22202121210 its reverse (1212120222), we get a palindrome (23414241432).

The spelling of 22202121210 in words is "twenty-two billion, two hundred two million, one hundred twenty-one thousand, two hundred ten".