22005243212 has 12 divisors (see below), whose sum is σ = 39140474016. Its totient is φ = 10822250640.

The previous prime is 22005243203. The next prime is 22005243229. The reversal of 22005243212 is 21234250022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45092468 + ... + 45092955.

It is an arithmetic number, because the mean of its divisors is an integer number (3261706168).

Almost surely, 2^22005243212 is an apocalyptic number.

It is an amenable number.

22005243212 is a deficient number, since it is larger than the sum of its proper divisors (17135230804).

22005243212 is a wasteful number, since it uses less digits than its factorization.

22005243212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90185488 (or 90185486 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 22005243212 its reverse (21234250022), we get a palindrome (43239493234).

The spelling of 22005243212 in words is "twenty-two billion, five million, two hundred forty-three thousand, two hundred twelve".