21330232130971 has 2 divisors, whose sum is σ = 21330232130972. Its totient is φ = 21330232130970.

The previous prime is 21330232130959. The next prime is 21330232130981. The reversal of 21330232130971 is 17903123203312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21330232130971 - 2¹¹ = 21330232128923 is a prime.

It is a super-2 number, since 2×21330232130971² (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 21330232130971.

It is not a weakly prime, because it can be changed into another prime (21330232130941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665116065485 + 10665116065486.

It is an arithmetic number, because the mean of its divisors is an integer number (10665116065486).

Almost surely, 2^{21330232130971} is an apocalyptic number.

21330232130971 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330232130971 is an equidigital number, since it uses as much as digits as its factorization.

21330232130971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 37.

The spelling of 21330232130971 in words is "twenty-one trillion, three hundred thirty billion, two hundred thirty-two million, one hundred thirty thousand, nine hundred seventy-one".