21302323223233 has 16 divisors (see below), whose sum is σ = 23026831105936. Its totient is φ = 19590209614080.

The previous prime is 21302323223197. The next prime is 21302323223261. The reversal of 21302323223233 is 33232232320312.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 567569370384 + 20734753852849 = 753372^2 + 4553543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21302323223233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21302323223195 and 21302323223204.

It is not an unprimeable number, because it can be changed into a prime (21302323223263) 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, 1356691 + ... + 6666727.

It is an arithmetic number, because the mean of its divisors is an integer number (1439176944121).

Almost surely, 2^{21302323223233} is an apocalyptic number.

It is an amenable number.

21302323223233 is a deficient number, since it is larger than the sum of its proper divisors (1724507882703).

21302323223233 is a wasteful number, since it uses less digits than its factorization.

21302323223233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5311204.

The product of its (nonzero) digits is 46656, while the sum is 31.

Adding to 21302323223233 its reverse (33232232320312), we get a palindrome (54534555543545).

The spelling of 21302323223233 in words is "twenty-one trillion, three hundred two billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred thirty-three".