22133032212 has 12 divisors (see below), whose sum is σ = 51643741856. Its totient is φ = 7377677400.

The previous prime is 22133032177. The next prime is 22133032217. The reversal of 22133032212 is 21223033122.

It is a happy number.

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

It is a super-2 number, since 2×22133032212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22133032217) 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, 922209664 + ... + 922209687.

Almost surely, 2^22133032212 is an apocalyptic number.

It is an amenable number.

22133032212 is an abundant number, since it is smaller than the sum of its proper divisors (29510709644).

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

22133032212 is a wasteful number, since it uses less digits than its factorization.

22133032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844419358 (or 1844419356 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22133032212 its reverse (21223033122), we get a palindrome (43356065334).

The spelling of 22133032212 in words is "twenty-two billion, one hundred thirty-three million, thirty-two thousand, two hundred twelve".