22173121222 has 24 divisors (see below), whose sum is σ = 39234773520. Its totient is φ = 9368921520.

The previous prime is 22173121219. The next prime is 22173121247. The reversal of 22173121222 is 22212137122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1586397 + ... + 1600312.

It is an arithmetic number, because the mean of its divisors is an integer number (1634782230).

Almost surely, 2^22173121222 is an apocalyptic number.

22173121222 is a deficient number, since it is larger than the sum of its proper divisors (17061652298).

22173121222 is a wasteful number, since it uses less digits than its factorization.

22173121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186796 (or 3186789 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

Adding to 22173121222 its reverse (22212137122), we get a palindrome (44385258344).

The spelling of 22173121222 in words is "twenty-two billion, one hundred seventy-three million, one hundred twenty-one thousand, two hundred twenty-two".