22221022210 has 16 divisors (see below), whose sum is σ = 40752517176. Its totient is φ = 8720702848.

The previous prime is 22221022207. The next prime is 22221022249. The reversal of 22221022210 is 1222012222.

It can be written as a sum of positive squares in 4 ways, for example, as 20989924641 + 1231097569 = 144879^2 + 35087^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20962699 + ... + 20963758.

Almost surely, 2^22221022210 is an apocalyptic number.

22221022210 is a deficient number, since it is larger than the sum of its proper divisors (18531494966).

22221022210 is a wasteful number, since it uses less digits than its factorization.

22221022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41926517.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22221022210 its reverse (1222012222), we get a palindrome (23443034432).

The spelling of 22221022210 in words is "twenty-two billion, two hundred twenty-one million, twenty-two thousand, two hundred ten".