22021021022212 has 12 divisors (see below), whose sum is σ = 38910930350656. Its totient is φ = 10903612350600.

The previous prime is 22021021022179. The next prime is 22021021022219. The reversal of 22021021022212 is 21222012012022.

It is a self number, because there is not a number n which added to its sum of digits gives 22021021022212.

It is not an unprimeable number, because it can be changed into a prime (22021021022219) 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, 26724539664 + ... + 26724540487.

Almost surely, 2^{22021021022212} is an apocalyptic number.

It is an amenable number.

22021021022212 is a deficient number, since it is larger than the sum of its proper divisors (16889909328444).

22021021022212 is a wasteful number, since it uses less digits than its factorization.

22021021022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53449080258 (or 53449080256 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22021021022212 its reverse (21222012012022), we get a palindrome (43243033034234).

The spelling of 22021021022212 in words is "twenty-two trillion, twenty-one billion, twenty-one million, twenty-two thousand, two hundred twelve".