21012301113323 has 4 divisors (see below), whose sum is σ = 22628631968208. Its totient is φ = 19395970258440.

The previous prime is 21012301113313. The next prime is 21012301113337. The reversal of 21012301113323 is 32331110321012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21012301113323 - 2¹² = 21012301109227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012301113313) 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, 808165427423 + ... + 808165427448.

It is an arithmetic number, because the mean of its divisors is an integer number (5657157992052).

Almost surely, 2^{21012301113323} is an apocalyptic number.

21012301113323 is a deficient number, since it is larger than the sum of its proper divisors (1616330854885).

21012301113323 is a wasteful number, since it uses less digits than its factorization.

21012301113323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616330854884.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21012301113323 its reverse (32331110321012), we get a palindrome (53343411434335).

The spelling of 21012301113323 in words is "twenty-one trillion, twelve billion, three hundred one million, one hundred thirteen thousand, three hundred twenty-three".