22442440012 has 12 divisors (see below), whose sum is σ = 39276033496. Its totient is φ = 11220716160.

The previous prime is 22442439991. The next prime is 22442440019. The reversal of 22442440012 is 21004424422.

It is a super-2 number, since 2×22442440012² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22442440019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14853 + ... + 212380.

Almost surely, 2^22442440012 is an apocalyptic number.

It is an amenable number.

22442440012 is a deficient number, since it is larger than the sum of its proper divisors (16833593484).

22442440012 is a wasteful number, since it uses less digits than its factorization.

22442440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251928 (or 251926 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 22442440012 its reverse (21004424422), we get a palindrome (43446864434).

The spelling of 22442440012 in words is "twenty-two billion, four hundred forty-two million, four hundred forty thousand, twelve".