22021219952 has 10 divisors (see below), whose sum is σ = 42666113688. Its totient is φ = 11010609968.

The previous prime is 22021219951. The next prime is 22021219973. The reversal of 22021219952 is 25991212022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021219951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688163108 + ... + 688163139.

Almost surely, 2^22021219952 is an apocalyptic number.

It is an amenable number.

22021219952 is a deficient number, since it is larger than the sum of its proper divisors (20644893736).

22021219952 is a wasteful number, since it uses less digits than its factorization.

22021219952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376326255 (or 1376326249 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 22021219952 in words is "twenty-two billion, twenty-one million, two hundred nineteen thousand, nine hundred fifty-two".