21103302023 has 2 divisors, whose sum is σ = 21103302024. Its totient is φ = 21103302022.

The previous prime is 21103301983. The next prime is 21103302029. The reversal of 21103302023 is 32020330112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21103302023 - 2²⁴ = 21086524807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21103301992 and 21103302010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21103302029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551651011 + 10551651012.

It is an arithmetic number, because the mean of its divisors is an integer number (10551651012).

Almost surely, 2^21103302023 is an apocalyptic number.

21103302023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103302023 is an equidigital number, since it uses as much as digits as its factorization.

21103302023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21103302023 its reverse (32020330112), we get a palindrome (53123632135).

The spelling of 21103302023 in words is "twenty-one billion, one hundred three million, three hundred two thousand, twenty-three".