162169121 has 2 divisors, whose sum is σ = 162169122. Its totient is φ = 162169120.

The previous prime is 162169109. The next prime is 162169157. The reversal of 162169121 is 121961261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 80013025 = 9064^2 + 8945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162169121 is a prime.

It is not a weakly prime, because it can be changed into another prime (162169181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81084560 + 81084561.

It is an arithmetic number, because the mean of its divisors is an integer number (81084561).

Almost surely, 2^162169121 is an apocalyptic number.

It is an amenable number.

162169121 is a deficient number, since it is larger than the sum of its proper divisors (1).

162169121 is an equidigital number, since it uses as much as digits as its factorization.

162169121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 29.

The square root of 162169121 is about 12734.5640286584. The cubic root of 162169121 is about 545.3258114133.

The spelling of 162169121 in words is "one hundred sixty-two million, one hundred sixty-nine thousand, one hundred twenty-one".