162999121 has 2 divisors, whose sum is σ = 162999122. Its totient is φ = 162999120.

The previous prime is 162999107. The next prime is 162999131. The reversal of 162999121 is 121999261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159668496 + 3330625 = 12636^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 162999121 - 2⁹ = 162998609 is a prime.

It is not a weakly prime, because it can be changed into another prime (162999101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81499560 + 81499561.

It is an arithmetic number, because the mean of its divisors is an integer number (81499561).

Almost surely, 2^162999121 is an apocalyptic number.

It is an amenable number.

162999121 is a deficient number, since it is larger than the sum of its proper divisors (1).

162999121 is an equidigital number, since it uses as much as digits as its factorization.

162999121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 40.

The square root of 162999121 is about 12767.1109104605. The cubic root of 162999121 is about 546.2545752069.

The spelling of 162999121 in words is "one hundred sixty-two million, nine hundred ninety-nine thousand, one hundred twenty-one".