121380965 has 16 divisors (see below), whose sum is σ = 150721536. Its totient is φ = 93744000.

The previous prime is 121380899. The next prime is 121380977. The reversal of 121380965 is 569083121.

It is not a de Polignac number, because 121380965 - 2¹² = 121376869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92504 + ... + 93806.

It is an arithmetic number, because the mean of its divisors is an integer number (9420096).

Almost surely, 2^121380965 is an apocalyptic number.

It is an amenable number.

121380965 is a deficient number, since it is larger than the sum of its proper divisors (29340571).

121380965 is a wasteful number, since it uses less digits than its factorization.

121380965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 121380965 is about 11017.3029821277. The cubic root of 121380965 is about 495.1272876071.

The spelling of 121380965 in words is "one hundred twenty-one million, three hundred eighty thousand, nine hundred sixty-five".