22113313212 has 12 divisors (see below), whose sum is σ = 51597730856. Its totient is φ = 7371104400.

The previous prime is 22113313199. The next prime is 22113313259. The reversal of 22113313212 is 21231331122.

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

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 3 ways as a sum of consecutive naturals, for example, 921388039 + ... + 921388062.

Almost surely, 2^22113313212 is an apocalyptic number.

It is an amenable number.

22113313212 is an abundant number, since it is smaller than the sum of its proper divisors (29484417644).

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

22113313212 is a wasteful number, since it uses less digits than its factorization.

22113313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842776108 (or 1842776106 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 22113313212 its reverse (21231331122), we get a palindrome (43344644334).

The spelling of 22113313212 in words is "twenty-two billion, one hundred thirteen million, three hundred thirteen thousand, two hundred twelve".