22221020012 has 24 divisors (see below), whose sum is σ = 39127408320. Its totient is φ = 11041935120.

The previous prime is 22221019993. The next prime is 22221020027. The reversal of 22221020012 is 21002012222.

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, 497039 + ... + 539897.

It is an arithmetic number, because the mean of its divisors is an integer number (1630308680).

Almost surely, 2^22221020012 is an apocalyptic number.

It is an amenable number.

22221020012 is a deficient number, since it is larger than the sum of its proper divisors (16906388308).

22221020012 is a wasteful number, since it uses less digits than its factorization.

22221020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43661 (or 43659 counting only the distinct ones).

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

Adding to 22221020012 its reverse (21002012222), we get a palindrome (43223032234).

The spelling of 22221020012 in words is "twenty-two billion, two hundred twenty-one million, twenty thousand, twelve".