21312020313299 has 8 divisors (see below), whose sum is σ = 21436449021120. Its totient is φ = 21187605833856.

The previous prime is 21312020313169. The next prime is 21312020313329. The reversal of 21312020313299 is 99231302021312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21312020313299 is a prime.

It is a super-2 number, since 2×21312020313299² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21312020313599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545222 + ... + 6551435.

It is an arithmetic number, because the mean of its divisors is an integer number (2679556127640).

Almost surely, 2^{21312020313299} is an apocalyptic number.

21312020313299 is a deficient number, since it is larger than the sum of its proper divisors (124428707821).

21312020313299 is a wasteful number, since it uses less digits than its factorization.

21312020313299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7114189.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 21312020313299 in words is "twenty-one trillion, three hundred twelve billion, twenty million, three hundred thirteen thousand, two hundred ninety-nine".