121162681 has 2 divisors, whose sum is σ = 121162682. Its totient is φ = 121162680.

The previous prime is 121162673. The next prime is 121162687. The reversal of 121162681 is 186261121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91011600 + 30151081 = 9540^2 + 5491^2 .

It is a cyclic number.

It is not a de Polignac number, because 121162681 - 2³ = 121162673 is a prime.

It is a super-2 number, since 2×121162681² = 29360790534215522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121162687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60581340 + 60581341.

It is an arithmetic number, because the mean of its divisors is an integer number (60581341).

Almost surely, 2^121162681 is an apocalyptic number.

It is an amenable number.

121162681 is a deficient number, since it is larger than the sum of its proper divisors (1).

121162681 is an equidigital number, since it uses as much as digits as its factorization.

121162681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 28.

The square root of 121162681 is about 11007.3921071251. The cubic root of 121162681 is about 494.8303074427.

The spelling of 121162681 in words is "one hundred twenty-one million, one hundred sixty-two thousand, six hundred eighty-one".