21326344233 has 16 divisors (see below), whose sum is σ = 28569917376. Its totient is φ = 14150315520.

The previous prime is 21326344213. The next prime is 21326344253. The reversal of 21326344233 is 33244362312.

It is an interprime number because it is at equal distance from previous prime (21326344213) and next prime (21326344253).

It is not a de Polignac number, because 21326344233 - 2⁸ = 21326343977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21326344194 and 21326344203.

It is not an unprimeable number, because it can be changed into a prime (21326344213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570741 + ... + 606957.

It is an arithmetic number, because the mean of its divisors is an integer number (1785619836).

Almost surely, 2^21326344233 is an apocalyptic number.

It is an amenable number.

21326344233 is a deficient number, since it is larger than the sum of its proper divisors (7243573143).

21326344233 is a wasteful number, since it uses less digits than its factorization.

21326344233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37144.

The product of its digits is 62208, while the sum is 33.

The spelling of 21326344233 in words is "twenty-one billion, three hundred twenty-six million, three hundred forty-four thousand, two hundred thirty-three".