2169012323161 has 2 divisors, whose sum is σ = 2169012323162. Its totient is φ = 2169012323160.

The previous prime is 2169012323141. The next prime is 2169012323173. The reversal of 2169012323161 is 1613232109612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1173668889600 + 995343433561 = 1083360^2 + 997669^2 .

It is a cyclic number.

It is not a de Polignac number, because 2169012323161 - 2⁷ = 2169012323033 is a prime.

It is a super-2 number, since 2×2169012323161² (a number of 25 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 2169012323161.

It is not a weakly prime, because it can be changed into another prime (2169012323141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084506161580 + 1084506161581.

It is an arithmetic number, because the mean of its divisors is an integer number (1084506161581).

Almost surely, 2^{2169012323161} is an apocalyptic number.

It is an amenable number.

2169012323161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169012323161 is an equidigital number, since it uses as much as digits as its factorization.

2169012323161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 2169012323161 in words is "two trillion, one hundred sixty-nine billion, twelve million, three hundred twenty-three thousand, one hundred sixty-one".