22122021022212 has 12 divisors (see below), whose sum is σ = 51618049051856. Its totient is φ = 7374007007400.

The previous prime is 22122021022193. The next prime is 22122021022243. The reversal of 22122021022212 is 21222012022122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22122021022212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921750875914 + ... + 921750875937.

Almost surely, 2^{22122021022212} is an apocalyptic number.

It is an amenable number.

22122021022212 is an abundant number, since it is smaller than the sum of its proper divisors (29496028029644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22122021022212 is a wasteful number, since it uses less digits than its factorization.

22122021022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843501751858 (or 1843501751856 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22122021022212 its reverse (21222012022122), we get a palindrome (43344033044334).

The spelling of 22122021022212 in words is "twenty-two trillion, one hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred twelve".