22144244212 has 24 divisors (see below), whose sum is σ = 40100659200. Its totient is φ = 10687140576.

The previous prime is 22144244159. The next prime is 22144244233. The reversal of 22144244212 is 21244244122.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388989 + ... + 442267.

It is an arithmetic number, because the mean of its divisors is an integer number (1670860800).

Almost surely, 2^22144244212 is an apocalyptic number.

It is an amenable number.

22144244212 is a deficient number, since it is larger than the sum of its proper divisors (17956414988).

22144244212 is a wasteful number, since it uses less digits than its factorization.

22144244212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56895 (or 56893 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

Adding to 22144244212 its reverse (21244244122), we get a palindrome (43388488334).

The spelling of 22144244212 in words is "twenty-two billion, one hundred forty-four million, two hundred forty-four thousand, two hundred twelve".