21300113211323 has 4 divisors (see below), whose sum is σ = 21300281289648. Its totient is φ = 21299945133000.

The previous prime is 21300113211259. The next prime is 21300113211329. The reversal of 21300113211323 is 32311231100312.

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 21300113211323 - 2⁶ = 21300113211259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300113211329) 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, 83848928 + ... + 84102573.

It is an arithmetic number, because the mean of its divisors is an integer number (5325070322412).

Almost surely, 2^{21300113211323} is an apocalyptic number.

21300113211323 is a deficient number, since it is larger than the sum of its proper divisors (168078325).

21300113211323 is a wasteful number, since it uses less digits than its factorization.

21300113211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168078324.

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

Adding to 21300113211323 its reverse (32311231100312), we get a palindrome (53611344311635).

The spelling of 21300113211323 in words is "twenty-one trillion, three hundred billion, one hundred thirteen million, two hundred eleven thousand, three hundred twenty-three".