21332013023 has 2 divisors, whose sum is σ = 21332013024. Its totient is φ = 21332013022.

The previous prime is 21332013019. The next prime is 21332013047. The reversal of 21332013023 is 32031023312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21332013023 - 2² = 21332013019 is a prime.

It is a super-2 number, since 2×21332013023² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21332012986 and 21332013004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332013223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666006511 + 10666006512.

It is an arithmetic number, because the mean of its divisors is an integer number (10666006512).

Almost surely, 2^21332013023 is an apocalyptic number.

21332013023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332013023 is an equidigital number, since it uses as much as digits as its factorization.

21332013023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21332013023 its reverse (32031023312), we get a palindrome (53363036335).

The spelling of 21332013023 in words is "twenty-one billion, three hundred thirty-two million, thirteen thousand, twenty-three".