121697965 has 8 divisors (see below), whose sum is σ = 146100600. Its totient is φ = 97316352.

The previous prime is 121697959. The next prime is 121697987. The reversal of 121697965 is 569796121.

It can be written as a sum of positive squares in 4 ways, for example, as 13995081 + 107702884 = 3741^2 + 10378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121697965 - 2³ = 121697957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13717 + ... + 20773.

It is an arithmetic number, because the mean of its divisors is an integer number (18262575).

Almost surely, 2^121697965 is an apocalyptic number.

It is an amenable number.

121697965 is a deficient number, since it is larger than the sum of its proper divisors (24402635).

121697965 is an equidigital number, since it uses as much as digits as its factorization.

121697965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511.

The product of its digits is 204120, while the sum is 46.

The square root of 121697965 is about 11031.6800624384. The cubic root of 121697965 is about 495.5579397349.

The spelling of 121697965 in words is "one hundred twenty-one million, six hundred ninety-seven thousand, nine hundred sixty-five".