22215232442 has 32 divisors (see below), whose sum is σ = 37185523200. Its totient is φ = 9883113408.

The previous prime is 22215232441. The next prime is 22215232489. The reversal of 22215232442 is 24423251222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (22215232441) 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, 433409 + ... + 481947.

It is an arithmetic number, because the mean of its divisors is an integer number (1162047600).

Almost surely, 2^22215232442 is an apocalyptic number.

22215232442 is a deficient number, since it is larger than the sum of its proper divisors (14970290758).

22215232442 is a wasteful number, since it uses less digits than its factorization.

22215232442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49190.

The product of its digits is 15360, while the sum is 29.

Adding to 22215232442 its reverse (24423251222), we get a palindrome (46638483664).

The spelling of 22215232442 in words is "twenty-two billion, two hundred fifteen million, two hundred thirty-two thousand, four hundred forty-two".