121495897 has 2 divisors, whose sum is σ = 121495898. Its totient is φ = 121495896.

The previous prime is 121495879. The next prime is 121495909. The reversal of 121495897 is 798594121.

Together with previous prime (121495879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121352256 + 143641 = 11016^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 121495897 - 2¹⁵ = 121463129 is a prime.

It is a super-2 number, since 2×121495897² = 29522505975669218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121495817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60747948 + 60747949.

It is an arithmetic number, because the mean of its divisors is an integer number (60747949).

Almost surely, 2^121495897 is an apocalyptic number.

It is an amenable number.

121495897 is a deficient number, since it is larger than the sum of its proper divisors (1).

121495897 is an equidigital number, since it uses as much as digits as its factorization.

121495897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 46.

The square root of 121495897 is about 11022.5177250935. The cubic root of 121495897 is about 495.2835120420.

The spelling of 121495897 in words is "one hundred twenty-one million, four hundred ninety-five thousand, eight hundred ninety-seven".