122031961 has 2 divisors, whose sum is σ = 122031962. Its totient is φ = 122031960.

The previous prime is 122031953. The next prime is 122031989. The reversal of 122031961 is 169130221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119246400 + 2785561 = 10920^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 122031961 - 2³ = 122031953 is a prime.

It is not a weakly prime, because it can be changed into another prime (122031941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61015980 + 61015981.

It is an arithmetic number, because the mean of its divisors is an integer number (61015981).

Almost surely, 2^122031961 is an apocalyptic number.

It is an amenable number.

122031961 is a deficient number, since it is larger than the sum of its proper divisors (1).

122031961 is an equidigital number, since it uses as much as digits as its factorization.

122031961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 122031961 is about 11046.8077289324. The cubic root of 122031961 is about 496.0108730382.

The spelling of 122031961 in words is "one hundred twenty-two million, thirty-one thousand, nine hundred sixty-one".