21446338233 has 8 divisors (see below), whose sum is σ = 28599059200. Its totient is φ = 14295588048.

The previous prime is 21446338213. The next prime is 21446338327. The reversal of 21446338233 is 33283364412.

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

It is not a de Polignac number, because 21446338233 - 2¹² = 21446334137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21446338191 and 21446338200.

It is not an unprimeable number, because it can be changed into a prime (21446338213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467113 + ... + 510966.

It is an arithmetic number, because the mean of its divisors is an integer number (3574882400).

Almost surely, 2^21446338233 is an apocalyptic number.

It is an amenable number.

21446338233 is a deficient number, since it is larger than the sum of its proper divisors (7152720967).

21446338233 is an equidigital number, since it uses as much as digits as its factorization.

21446338233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985391.

The product of its digits is 248832, while the sum is 39.

The spelling of 21446338233 in words is "twenty-one billion, four hundred forty-six million, three hundred thirty-eight thousand, two hundred thirty-three".