22221002012012 has 6 divisors (see below), whose sum is σ = 38886753521028. Its totient is φ = 11110501006004.

The previous prime is 22221002011973. The next prime is 22221002012017. The reversal of 22221002012012 is 21021020012222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22221002012017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777625251498 + ... + 2777625251505.

It is an arithmetic number, because the mean of its divisors is an integer number (6481125586838).

Almost surely, 2^{22221002012012} is an apocalyptic number.

It is an amenable number.

22221002012012 is a deficient number, since it is larger than the sum of its proper divisors (16665751509016).

22221002012012 is a wasteful number, since it uses less digits than its factorization.

22221002012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555250503007 (or 5555250503005 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22221002012012 its reverse (21021020012222), we get a palindrome (43242022024234).

The spelling of 22221002012012 in words is "twenty-two trillion, two hundred twenty-one billion, two million, twelve thousand, twelve".