22241212112 has 50 divisors (see below), whose sum is σ = 50271502098. Its totient is φ = 9531931584.

The previous prime is 22241212099. The next prime is 22241212141. The reversal of 22241212112 is 21121214222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21551414416 + 689797696 = 146804^2 + 26264^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 251063 + ... + 327894.

Almost surely, 2^22241212112 is an apocalyptic number.

It is an amenable number.

22241212112 is an abundant number, since it is smaller than the sum of its proper divisors (28030289986).

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

22241212112 is an frugal number, since it uses more digits than its factorization.

22241212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578993 (or 578966 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

Adding to 22241212112 its reverse (21121214222), we get a palindrome (43362426334).

The spelling of 22241212112 in words is "twenty-two billion, two hundred forty-one million, two hundred twelve thousand, one hundred twelve".