21312332299 has 4 divisors (see below), whose sum is σ = 21312627336. Its totient is φ = 21312037264.

The previous prime is 21312332233. The next prime is 21312332309. The reversal of 21312332299 is 99223321312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21312332299 - 2¹¹ = 21312330251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21312332099) 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, 41967 + ... + 210679.

It is an arithmetic number, because the mean of its divisors is an integer number (5328156834).

Almost surely, 2^21312332299 is an apocalyptic number.

21312332299 is a deficient number, since it is larger than the sum of its proper divisors (295037).

21312332299 is a wasteful number, since it uses less digits than its factorization.

21312332299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295036.

The product of its digits is 34992, while the sum is 37.

The spelling of 21312332299 in words is "twenty-one billion, three hundred twelve million, three hundred thirty-two thousand, two hundred ninety-nine".