121056769 has 4 divisors (see below), whose sum is σ = 121376560. Its totient is φ = 120736980.

The previous prime is 121056763. The next prime is 121056791. The reversal of 121056769 is 967650121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967650121 = 191 ⋅5066231.

It is a cyclic number.

It is not a de Polignac number, because 121056769 - 2¹⁹ = 120532481 is a prime.

It is a super-2 number, since 2×121056769² = 29309482641438722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121056763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159327 + ... + 160084.

It is an arithmetic number, because the mean of its divisors is an integer number (30344140).

Almost surely, 2^121056769 is an apocalyptic number.

It is an amenable number.

121056769 is a deficient number, since it is larger than the sum of its proper divisors (319791).

121056769 is an equidigital number, since it uses as much as digits as its factorization.

121056769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319790.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 121056769 is about 11002.5801065023. The cubic root of 121056769 is about 494.6860833161.

The spelling of 121056769 in words is "one hundred twenty-one million, fifty-six thousand, seven hundred sixty-nine".