21365333356312 has 16 divisors (see below), whose sum is σ = 43701818229000. Its totient is φ = 9711515161920.

The previous prime is 21365333356291. The next prime is 21365333356319.

21365333356312 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21365333356319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121393939437 + ... + 121393939612.

Almost surely, 2^{21365333356312} is an apocalyptic number.

21365333356312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21365333356312 is an abundant number, since it is smaller than the sum of its proper divisors (22336484872688).

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

21365333356312 is a wasteful number, since it uses less digits than its factorization.

21365333356312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242787879066 (or 242787879062 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 46.

The spelling of 21365333356312 in words is "twenty-one trillion, three hundred sixty-five billion, three hundred thirty-three million, three hundred fifty-six thousand, three hundred twelve".