121873117 has 4 divisors (see below), whose sum is σ = 121937536. Its totient is φ = 121808700.

The previous prime is 121873091. The next prime is 121873127. The reversal of 121873117 is 711378121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121873117 - 2¹¹ = 121871069 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 (121873127) 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, 29283 + ... + 33184.

It is an arithmetic number, because the mean of its divisors is an integer number (30484384).

Almost surely, 2^121873117 is an apocalyptic number.

It is an amenable number.

121873117 is a deficient number, since it is larger than the sum of its proper divisors (64419).

121873117 is an equidigital number, since it uses as much as digits as its factorization.

121873117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64418.

The product of its digits is 2352, while the sum is 31.

The square root of 121873117 is about 11039.6157994742. The cubic root of 121873117 is about 495.7955672543.

The spelling of 121873117 in words is "one hundred twenty-one million, eight hundred seventy-three thousand, one hundred seventeen".