21323301222013 has 64 divisors (see below), whose sum is σ = 27036218880000. Its totient is φ = 16386074901504.

The previous prime is 21323301222011. The next prime is 21323301222017. The reversal of 21323301222013 is 31022210332312.

It is not a de Polignac number, because 21323301222013 - 2¹ = 21323301222011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323301222011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2428894258 + ... + 2428903036.

It is an arithmetic number, because the mean of its divisors is an integer number (422440920000).

Almost surely, 2^{21323301222013} is an apocalyptic number.

21323301222013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21323301222013 is a deficient number, since it is larger than the sum of its proper divisors (5712917657987).

21323301222013 is a wasteful number, since it uses less digits than its factorization.

21323301222013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12394.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21323301222013 its reverse (31022210332312), we get a palindrome (52345511554325).

The spelling of 21323301222013 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred one million, two hundred twenty-two thousand, thirteen".