22232304012 has 12 divisors (see below), whose sum is σ = 51875376056. Its totient is φ = 7410768000.

The previous prime is 22232303903. The next prime is 22232304019. The reversal of 22232304012 is 21040323222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22232304012² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22232304012.

It is not an unprimeable number, because it can be changed into a prime (22232304019) 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, 926345989 + ... + 926346012.

Almost surely, 2^22232304012 is an apocalyptic number.

It is an amenable number.

22232304012 is an abundant number, since it is smaller than the sum of its proper divisors (29643072044).

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

22232304012 is a wasteful number, since it uses less digits than its factorization.

22232304012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852692008 (or 1852692006 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22232304012 its reverse (21040323222), we get a palindrome (43272627234).

The spelling of 22232304012 in words is "twenty-two billion, two hundred thirty-two million, three hundred four thousand, twelve".