22133110212 has 18 divisors (see below), whose sum is σ = 55947584238. Its totient is φ = 7377703392.

The previous prime is 22133110193. The next prime is 22133110217. The reversal of 22133110212 is 21201133122.

22133110212 is a `hidden beast` number, since 221 + 331 + 102 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22098606336 + 34503876 = 148656^2 + 5874^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22133110217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307404273 + ... + 307404344.

Almost surely, 2^22133110212 is an apocalyptic number.

It is an amenable number.

22133110212 is an abundant number, since it is smaller than the sum of its proper divisors (33814474026).

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

22133110212 is a wasteful number, since it uses less digits than its factorization.

22133110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614808627 (or 614808622 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22133110212 its reverse (21201133122), we get a palindrome (43334243334).

The spelling of 22133110212 in words is "twenty-two billion, one hundred thirty-three million, one hundred ten thousand, two hundred twelve".