8112121161497 has 2 divisors, whose sum is σ = 8112121161498. Its totient is φ = 8112121161496.

The previous prime is 8112121161481. The next prime is 8112121161611. The reversal of 8112121161497 is 7941611212118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6252705292681 + 1859415868816 = 2500541^2 + 1363604^2 .

It is a cyclic number.

It is not a de Polignac number, because 8112121161497 - 2⁴ = 8112121161481 is a prime.

It is not a weakly prime, because it can be changed into another prime (8112121161097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056060580748 + 4056060580749.

It is an arithmetic number, because the mean of its divisors is an integer number (4056060580749).

Almost surely, 2^{8112121161497} is an apocalyptic number.

It is an amenable number.

8112121161497 is a deficient number, since it is larger than the sum of its proper divisors (1).

8112121161497 is an equidigital number, since it uses as much as digits as its factorization.

8112121161497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 44.

The spelling of 8112121161497 in words is "eight trillion, one hundred twelve billion, one hundred twenty-one million, one hundred sixty-one thousand, four hundred ninety-seven".