22312320212 has 48 divisors (see below), whose sum is σ = 49229467392. Its totient is φ = 8611557120.

The previous prime is 22312320211. The next prime is 22312320227. The reversal of 22312320212 is 21202321322.

It is a happy number.

It is a super-3 number, since 3×22312320212³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312320211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732608 + ... + 762455.

It is an arithmetic number, because the mean of its divisors is an integer number (1025613904).

Almost surely, 2^22312320212 is an apocalyptic number.

It is an amenable number.

22312320212 is an abundant number, since it is smaller than the sum of its proper divisors (26917147180).

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

22312320212 is a wasteful number, since it uses less digits than its factorization.

22312320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495128 (or 1495126 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22312320212 its reverse (21202321322), we get a palindrome (43514641534).

The spelling of 22312320212 in words is "twenty-two billion, three hundred twelve million, three hundred twenty thousand, two hundred twelve".