21132130318903 has 2 divisors, whose sum is σ = 21132130318904. Its totient is φ = 21132130318902.

The previous prime is 21132130318787. The next prime is 21132130318963. The reversal of 21132130318903 is 30981303123112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21132130318903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21132130318963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566065159451 + 10566065159452.

It is an arithmetic number, because the mean of its divisors is an integer number (10566065159452).

Almost surely, 2^{21132130318903} is an apocalyptic number.

21132130318903 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132130318903 is an equidigital number, since it uses as much as digits as its factorization.

21132130318903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 21132130318903 in words is "twenty-one trillion, one hundred thirty-two billion, one hundred thirty million, three hundred eighteen thousand, nine hundred three".