121499065 has 4 divisors (see below), whose sum is σ = 145798884. Its totient is φ = 97199248.

The previous prime is 121499057. The next prime is 121499099. The reversal of 121499065 is 560994121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560994121 = 2851 ⋅196771.

It can be written as a sum of positive squares in 2 ways, for example, as 77369616 + 44129449 = 8796^2 + 6643^2 .

It is a cyclic number.

It is not a de Polignac number, because 121499065 - 2³ = 121499057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12149902 + ... + 12149911.

It is an arithmetic number, because the mean of its divisors is an integer number (36449721).

Almost surely, 2^121499065 is an apocalyptic number.

It is an amenable number.

121499065 is a deficient number, since it is larger than the sum of its proper divisors (24299819).

121499065 is an equidigital number, since it uses as much as digits as its factorization.

121499065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24299818.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 121499065 is about 11022.6614299814. The cubic root of 121499065 is about 495.2878168363.

The spelling of 121499065 in words is "one hundred twenty-one million, four hundred ninety-nine thousand, sixty-five".