22121010222 has 16 divisors (see below), whose sum is σ = 44257671120. Its totient is φ = 7371061632.

The previous prime is 22121010199. The next prime is 22121010227. The reversal of 22121010222 is 22201012122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121010227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633697 + ... + 667692.

It is an arithmetic number, because the mean of its divisors is an integer number (2766104445).

Almost surely, 2^22121010222 is an apocalyptic number.

22121010222 is an abundant number, since it is smaller than the sum of its proper divisors (22136660898).

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

22121010222 is a wasteful number, since it uses less digits than its factorization.

22121010222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304227.

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

Adding to 22121010222 its reverse (22201012122), we get a palindrome (44322022344).

The spelling of 22121010222 in words is "twenty-two billion, one hundred twenty-one million, ten thousand, two hundred twenty-two".