21332013223 has 2 divisors, whose sum is σ = 21332013224. Its totient is φ = 21332013222.

The previous prime is 21332013191. The next prime is 21332013239. The reversal of 21332013223 is 32231023312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21332013223 - 2⁵ = 21332013191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21332013194 and 21332013203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332013023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666006611 + 10666006612.

It is an arithmetic number, because the mean of its divisors is an integer number (10666006612).

Almost surely, 2^21332013223 is an apocalyptic number.

21332013223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332013223 is an equidigital number, since it uses as much as digits as its factorization.

21332013223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21332013223 its reverse (32231023312), we get a palindrome (53563036535).

The spelling of 21332013223 in words is "twenty-one billion, three hundred thirty-two million, thirteen thousand, two hundred twenty-three".