22221122210 has 48 divisors (see below), whose sum is σ = 47316985920. Its totient is φ = 7489530720.

The previous prime is 22221122201. The next prime is 22221122213. The reversal of 22221122210 is 1222112222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22221122213) 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, 355406 + ... + 413225.

It is an arithmetic number, because the mean of its divisors is an integer number (985770540).

Almost surely, 2^22221122210 is an apocalyptic number.

22221122210 is an abundant number, since it is smaller than the sum of its proper divisors (25095863710).

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

22221122210 is a wasteful number, since it uses less digits than its factorization.

22221122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768711 (or 768704 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22221122210 its reverse (1222112222), we get a palindrome (23443234432).

The spelling of 22221122210 in words is "twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred ten".