21232504511 has 2 divisors, whose sum is σ = 21232504512. Its totient is φ = 21232504510.

The previous prime is 21232504507. The next prime is 21232504523. The reversal of 21232504511 is 11540523212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21232504511 - 2² = 21232504507 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232404511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616252255 + 10616252256.

It is an arithmetic number, because the mean of its divisors is an integer number (10616252256).

Almost surely, 2^21232504511 is an apocalyptic number.

21232504511 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232504511 is an equidigital number, since it uses as much as digits as its factorization.

21232504511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 21232504511 in words is "twenty-one billion, two hundred thirty-two million, five hundred four thousand, five hundred eleven".