21325131313019 has 2 divisors, whose sum is σ = 21325131313020. Its totient is φ = 21325131313018.

The previous prime is 21325131312943. The next prime is 21325131313033. The reversal of 21325131313019 is 91031313152312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21325131313019 - 2²⁰ = 21325130264443 is a prime.

It is a super-2 number, since 2×21325131313019² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21325131313019.

It is not a weakly prime, because it can be changed into another prime (21325131313099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10662565656509 + 10662565656510.

It is an arithmetic number, because the mean of its divisors is an integer number (10662565656510).

Almost surely, 2^{21325131313019} is an apocalyptic number.

21325131313019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21325131313019 is an equidigital number, since it uses as much as digits as its factorization.

21325131313019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The spelling of 21325131313019 in words is "twenty-one trillion, three hundred twenty-five billion, one hundred thirty-one million, three hundred thirteen thousand, nineteen".