121044165 has 48 divisors (see below), whose sum is σ = 225457344. Its totient is φ = 55221760.

The previous prime is 121044151. The next prime is 121044197. The reversal of 121044165 is 561440121.

It is a happy number.

It is not a de Polignac number, because 121044165 - 2¹² = 121040069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28894 + ... + 32816.

It is an arithmetic number, because the mean of its divisors is an integer number (4697028).

Almost surely, 2^121044165 is an apocalyptic number.

121044165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121044165 is a deficient number, since it is larger than the sum of its proper divisors (104413179).

121044165 is a wasteful number, since it uses less digits than its factorization.

121044165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970 (or 3959 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 121044165 is about 11002.0073168490. The cubic root of 121044165 is about 494.6689144020.

Adding to 121044165 its reverse (561440121), we get a palindrome (682484286).

The spelling of 121044165 in words is "one hundred twenty-one million, forty-four thousand, one hundred sixty-five".