122111971 has 2 divisors, whose sum is σ = 122111972. Its totient is φ = 122111970.

The previous prime is 122111933. The next prime is 122112017. The reversal of 122111971 is 179111221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122111971 - 2¹⁵ = 122079203 is a prime.

It is a super-2 number, since 2×122111971² = 29822666923009682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122111921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055985 + 61055986.

It is an arithmetic number, because the mean of its divisors is an integer number (61055986).

Almost surely, 2^122111971 is an apocalyptic number.

122111971 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111971 is an equidigital number, since it uses as much as digits as its factorization.

122111971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 25.

The square root of 122111971 is about 11050.4285437263. The cubic root of 122111971 is about 496.1192521859.

The spelling of 122111971 in words is "one hundred twenty-two million, one hundred eleven thousand, nine hundred seventy-one".