121057897 has 2 divisors, whose sum is σ = 121057898. Its totient is φ = 121057896.

The previous prime is 121057841. The next prime is 121057933. The reversal of 121057897 is 798750121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113976976 + 7080921 = 10676^2 + 2661^2 .

It is a cyclic number.

It is not a de Polignac number, because 121057897 - 2²³ = 112669289 is a prime.

It is not a weakly prime, because it can be changed into another prime (121057837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60528948 + 60528949.

It is an arithmetic number, because the mean of its divisors is an integer number (60528949).

Almost surely, 2^121057897 is an apocalyptic number.

It is an amenable number.

121057897 is a deficient number, since it is larger than the sum of its proper divisors (1).

121057897 is an equidigital number, since it uses as much as digits as its factorization.

121057897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 121057897 is about 11002.6313670867. The cubic root of 121057897 is about 494.6876197968.

It can be divided in two parts, 12105 and 7897, that added together give a palindrome (20002).

The spelling of 121057897 in words is "one hundred twenty-one million, fifty-seven thousand, eight hundred ninety-seven".