22122200012 has 12 divisors (see below), whose sum is σ = 42233291016. Its totient is φ = 10055545440.

The previous prime is 22122200003. The next prime is 22122200017. The reversal of 22122200012 is 21000222122.

It is a self number, because there is not a number n which added to its sum of digits gives 22122200012.

It is not an unprimeable number, because it can be changed into a prime (22122200017) 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, 251388593 + ... + 251388680.

It is an arithmetic number, because the mean of its divisors is an integer number (3519440918).

Almost surely, 2^22122200012 is an apocalyptic number.

22122200012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22122200012 is a deficient number, since it is larger than the sum of its proper divisors (20111091004).

22122200012 is a wasteful number, since it uses less digits than its factorization.

22122200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502777288 (or 502777286 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22122200012 its reverse (21000222122), we get a palindrome (43122422134).

The spelling of 22122200012 in words is "twenty-two billion, one hundred twenty-two million, two hundred thousand, twelve".