22255032221212 has 24 divisors (see below), whose sum is σ = 45595675772640. Its totient is φ = 9305239952640.

The previous prime is 22255032221209. The next prime is 22255032221237. The reversal of 22255032221212 is 21212223055222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9692957137 + ... + 9692959432.

It is an arithmetic number, because the mean of its divisors is an integer number (1899819823860).

Almost surely, 2^{22255032221212} is an apocalyptic number.

It is an amenable number.

22255032221212 is an abundant number, since it is smaller than the sum of its proper divisors (23340643551428).

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

22255032221212 is a wasteful number, since it uses less digits than its factorization.

22255032221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19385916621 (or 19385916619 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 22255032221212 its reverse (21212223055222), we get a palindrome (43467255276434).

The spelling of 22255032221212 in words is "twenty-two trillion, two hundred fifty-five billion, thirty-two million, two hundred twenty-one thousand, two hundred twelve".