21000112312323 has 8 divisors (see below), whose sum is σ = 28257031858000. Its totient is φ = 13871633820768.

The previous prime is 21000112312271. The next prime is 21000112312339. The reversal of 21000112312323 is 32321321100012.

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

It is a de Polignac number, because none of the positive numbers 2^k-21000112312323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21000112312323.

It is not an unprimeable number, because it can be changed into a prime (21000112312363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32110263148 + ... + 32110263801.

It is an arithmetic number, because the mean of its divisors is an integer number (3532128982250).

Almost surely, 2^{21000112312323} is an apocalyptic number.

21000112312323 is a deficient number, since it is larger than the sum of its proper divisors (7256919545677).

21000112312323 is a wasteful number, since it uses less digits than its factorization.

21000112312323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64220527061.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21000112312323 its reverse (32321321100012), we get a palindrome (53321433412335).

The spelling of 21000112312323 in words is "twenty-one trillion, one hundred twelve million, three hundred twelve thousand, three hundred twenty-three".