121516769 has 16 divisors (see below), whose sum is σ = 136745280. Its totient is φ = 107012160.

The previous prime is 121516741. The next prime is 121516823. The reversal of 121516769 is 967615121.

It is a cyclic number.

It is not a de Polignac number, because 121516769 - 2⁸ = 121516513 is a prime.

It is a super-2 number, since 2×121516769² = 29532650296398722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121516709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118742 + ... + 119760.

It is an arithmetic number, because the mean of its divisors is an integer number (8546580).

Almost surely, 2^121516769 is an apocalyptic number.

It is an amenable number.

121516769 is a deficient number, since it is larger than the sum of its proper divisors (15228511).

121516769 is a wasteful number, since it uses less digits than its factorization.

121516769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its digits is 22680, while the sum is 38.

The square root of 121516769 is about 11023.4644735673. The cubic root of 121516769 is about 495.3118723016.

The spelling of 121516769 in words is "one hundred twenty-one million, five hundred sixteen thousand, seven hundred sixty-nine".