22712145222 has 32 divisors (see below), whose sum is σ = 49085473248. Its totient is φ = 6964494336.

The previous prime is 22712145193. The next prime is 22712145229. The reversal of 22712145222 is 22254121722.

It is a self number, because there is not a number n which added to its sum of digits gives 22712145222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22712145229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474043 + ... + 519750.

It is an arithmetic number, because the mean of its divisors is an integer number (1533921039).

Almost surely, 2^22712145222 is an apocalyptic number.

22712145222 is an abundant number, since it is smaller than the sum of its proper divisors (26373328026).

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

22712145222 is a wasteful number, since it uses less digits than its factorization.

22712145222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994104.

The product of its digits is 8960, while the sum is 30.

Adding to 22712145222 its reverse (22254121722), we get a palindrome (44966266944).

The spelling of 22712145222 in words is "twenty-two billion, seven hundred twelve million, one hundred forty-five thousand, two hundred twenty-two".