122000009161 has 2 divisors, whose sum is σ = 122000009162. Its totient is φ = 122000009160.

The previous prime is 122000009149. The next prime is 122000009213. The reversal of 122000009161 is 161900000221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119677251136 + 2322758025 = 345944^2 + 48195^2 .

It is an emirp because it is prime and its reverse (161900000221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122000009161 - 2²⁹ = 121463138249 is a prime.

It is not a weakly prime, because it can be changed into another prime (122000009101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000004580 + 61000004581.

It is an arithmetic number, because the mean of its divisors is an integer number (61000004581).

Almost surely, 2^122000009161 is an apocalyptic number.

It is an amenable number.

122000009161 is a deficient number, since it is larger than the sum of its proper divisors (1).

122000009161 is an equidigital number, since it uses as much as digits as its factorization.

122000009161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 122000009161 its reverse (161900000221), we get a palindrome (283900009382).

The spelling of 122000009161 in words is "one hundred twenty-two billion, nine thousand, one hundred sixty-one".