71332222567421 has 2 divisors, whose sum is σ = 71332222567422. Its totient is φ = 71332222567420.

The previous prime is 71332222567387. The next prime is 71332222567453. The reversal of 71332222567421 is 12476522223317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46457924160025 + 24874298407396 = 6816005^2 + 4987414^2 .

It is a cyclic number.

It is not a de Polignac number, because 71332222567421 - 2³⁰ = 71331148825597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71332222567471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35666111283710 + 35666111283711.

It is an arithmetic number, because the mean of its divisors is an integer number (35666111283711).

Almost surely, 2^{71332222567421} is an apocalyptic number.

It is an amenable number.

71332222567421 is a deficient number, since it is larger than the sum of its proper divisors (1).

71332222567421 is an equidigital number, since it uses as much as digits as its factorization.

71332222567421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 47.

The spelling of 71332222567421 in words is "seventy-one trillion, three hundred thirty-two billion, two hundred twenty-two million, five hundred sixty-seven thousand, four hundred twenty-one".