122154161 has 2 divisors, whose sum is σ = 122154162. Its totient is φ = 122154160.

The previous prime is 122154133. The next prime is 122154203. The reversal of 122154161 is 161451221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65302561 + 56851600 = 8081^2 + 7540^2 .

It is an emirp because it is prime and its reverse (161451221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122154161 - 2²⁶ = 55045297 is a prime.

It is a super-2 number, since 2×122154161² = 29843278099227842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122154661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61077080 + 61077081.

It is an arithmetic number, because the mean of its divisors is an integer number (61077081).

Almost surely, 2^122154161 is an apocalyptic number.

It is an amenable number.

122154161 is a deficient number, since it is larger than the sum of its proper divisors (1).

122154161 is an equidigital number, since it uses as much as digits as its factorization.

122154161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 122154161 is about 11052.3373546051. The cubic root of 122154161 is about 496.1763824327.

The spelling of 122154161 in words is "one hundred twenty-two million, one hundred fifty-four thousand, one hundred sixty-one".