21312233321412 has 96 divisors (see below), whose sum is σ = 55592657455104. Its totient is φ = 6299269513600.

The previous prime is 21312233321363. The next prime is 21312233321443. The reversal of 21312233321412 is 21412333221312.

It is a super-2 number, since 2×21312233321412² (a number of 27 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21312233321412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4044414 + ... + 7679957.

It is an arithmetic number, because the mean of its divisors is an integer number (579090181824).

Almost surely, 2^{21312233321412} is an apocalyptic number.

21312233321412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21312233321412 is an abundant number, since it is smaller than the sum of its proper divisors (34280424133692).

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

21312233321412 is a wasteful number, since it uses less digits than its factorization.

21312233321412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11724729 (or 11724727 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

Adding to 21312233321412 its reverse (21412333221312), we get a palindrome (42724566542724).

The spelling of 21312233321412 in words is "twenty-one trillion, three hundred twelve billion, two hundred thirty-three million, three hundred twenty-one thousand, four hundred twelve".