23201222122 has 12 divisors (see below), whose sum is σ = 37684825830. Its totient is φ = 10708256208.

The previous prime is 23201222119. The next prime is 23201222123. The reversal of 23201222122 is 22122210232.

It can be written as a sum of positive squares in 3 ways, for example, as 19762455241 + 3438766881 = 140579^2 + 58641^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23201222122.

It is not an unprimeable number, because it can be changed into a prime (23201222123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34320997 + ... + 34321672.

Almost surely, 2^23201222122 is an apocalyptic number.

23201222122 is a deficient number, since it is larger than the sum of its proper divisors (14483603708).

23201222122 is a wasteful number, since it uses less digits than its factorization.

23201222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68642697 (or 68642684 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 23201222122 its reverse (22122210232), we get a palindrome (45323432354).

The spelling of 23201222122 in words is "twenty-three billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-two".