17109571121 has 2 divisors, whose sum is σ = 17109571122. Its totient is φ = 17109571120.

The previous prime is 17109571049. The next prime is 17109571139. The reversal of 17109571121 is 12117590171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15222624400 + 1886946721 = 123380^2 + 43439^2 .

It is a cyclic number.

It is not a de Polignac number, because 17109571121 - 2²² = 17105376817 is a prime.

It is not a weakly prime, because it can be changed into another prime (17106571121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8554785560 + 8554785561.

It is an arithmetic number, because the mean of its divisors is an integer number (8554785561).

Almost surely, 2^17109571121 is an apocalyptic number.

It is an amenable number.

17109571121 is a deficient number, since it is larger than the sum of its proper divisors (1).

17109571121 is an equidigital number, since it uses as much as digits as its factorization.

17109571121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 35.

The spelling of 17109571121 in words is "seventeen billion, one hundred nine million, five hundred seventy-one thousand, one hundred twenty-one".