21132104023 has 2 divisors, whose sum is σ = 21132104024. Its totient is φ = 21132104022.

The previous prime is 21132103991. The next prime is 21132104027. The reversal of 21132104023 is 32040123112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21132104023 - 2⁵ = 21132103991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21132104027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566052011 + 10566052012.

It is an arithmetic number, because the mean of its divisors is an integer number (10566052012).

Almost surely, 2^21132104023 is an apocalyptic number.

21132104023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132104023 is an equidigital number, since it uses as much as digits as its factorization.

21132104023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21132104023 its reverse (32040123112), we get a palindrome (53172227135).

The spelling of 21132104023 in words is "twenty-one billion, one hundred thirty-two million, one hundred four thousand, twenty-three".