71122267129 has 2 divisors, whose sum is σ = 71122267130. Its totient is φ = 71122267128.

The previous prime is 71122267061. The next prime is 71122267211. The reversal of 71122267129 is 92176222117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41142037225 + 29980229904 = 202835^2 + 173148^2 .

It is a cyclic number.

It is not a de Polignac number, because 71122267129 - 2¹⁵ = 71122234361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71122267091 and 71122267100.

It is not a weakly prime, because it can be changed into another prime (71122267729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35561133564 + 35561133565.

It is an arithmetic number, because the mean of its divisors is an integer number (35561133565).

Almost surely, 2^71122267129 is an apocalyptic number.

It is an amenable number.

71122267129 is a deficient number, since it is larger than the sum of its proper divisors (1).

71122267129 is an equidigital number, since it uses as much as digits as its factorization.

71122267129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The spelling of 71122267129 in words is "seventy-one billion, one hundred twenty-two million, two hundred sixty-seven thousand, one hundred twenty-nine".