121130965 has 4 divisors (see below), whose sum is σ = 145357164. Its totient is φ = 96904768.

The previous prime is 121130963. The next prime is 121130983. The reversal of 121130965 is 569031121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569031121 = 109 ⋅5220469.

It can be written as a sum of positive squares in 2 ways, for example, as 76160529 + 44970436 = 8727^2 + 6706^2 .

It is a cyclic number.

It is not a de Polignac number, because 121130965 - 2¹ = 121130963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121130963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12113092 + ... + 12113101.

It is an arithmetic number, because the mean of its divisors is an integer number (36339291).

Almost surely, 2^121130965 is an apocalyptic number.

It is an amenable number.

121130965 is a deficient number, since it is larger than the sum of its proper divisors (24226199).

121130965 is an equidigital number, since it uses as much as digits as its factorization.

121130965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24226198.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 121130965 is about 11005.9513446135. The cubic root of 121130965 is about 494.7871274595.

The spelling of 121130965 in words is "one hundred twenty-one million, one hundred thirty thousand, nine hundred sixty-five".