122081881 has 2 divisors, whose sum is σ = 122081882. Its totient is φ = 122081880.

The previous prime is 122081849. The next prime is 122081891. The reversal of 122081881 is 188180221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119137225 + 2944656 = 10915^2 + 1716^2 .

It is an emirp because it is prime and its reverse (188180221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122081881 - 2⁵ = 122081849 is a prime.

It is a super-2 number, since 2×122081881² = 29807971336996322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122081891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61040940 + 61040941.

It is an arithmetic number, because the mean of its divisors is an integer number (61040941).

Almost surely, 2^122081881 is an apocalyptic number.

It is an amenable number.

122081881 is a deficient number, since it is larger than the sum of its proper divisors (1).

122081881 is an equidigital number, since it uses as much as digits as its factorization.

122081881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 122081881 is about 11049.0669741838. The cubic root of 122081881 is about 496.0784987296.

The spelling of 122081881 in words is "one hundred twenty-two million, eighty-one thousand, eight hundred eighty-one".