21122331320312 has 32 divisors (see below), whose sum is σ = 39941753832000. Its totient is φ = 10471451478144.

The previous prime is 21122331320297. The next prime is 21122331320327. The reversal of 21122331320312 is 21302313322112.

It is an interprime number because it is at equal distance from previous prime (21122331320297) and next prime (21122331320327).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15242768 + ... + 16570655.

It is an arithmetic number, because the mean of its divisors is an integer number (1248179807250).

Almost surely, 2^{21122331320312} is an apocalyptic number.

It is an amenable number.

21122331320312 is a deficient number, since it is larger than the sum of its proper divisors (18819422511688).

21122331320312 is a wasteful number, since it uses less digits than its factorization.

21122331320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31814135 (or 31814131 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21122331320312 its reverse (21302313322112), we get a palindrome (42424644642424).

The spelling of 21122331320312 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred thirty-one million, three hundred twenty thousand, three hundred twelve".