22201221210 has 64 divisors (see below), whose sum is σ = 62310961152. Its totient is φ = 4956549696.

The previous prime is 22201221209. The next prime is 22201221227. The reversal of 22201221210 is 1212210222.

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 22201221210.

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, 1220274 + ... + 1238333.

It is an arithmetic number, because the mean of its divisors is an integer number (973608768).

Almost surely, 2^22201221210 is an apocalyptic number.

22201221210 is an abundant number, since it is smaller than the sum of its proper divisors (40109739942).

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

22201221210 is a wasteful number, since it uses less digits than its factorization.

22201221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458667.

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

Adding to 22201221210 its reverse (1212210222), we get a palindrome (23413431432).

The spelling of 22201221210 in words is "twenty-two billion, two hundred one million, two hundred twenty-one thousand, two hundred ten".