121273017 has 4 divisors (see below), whose sum is σ = 161697360. Its totient is φ = 80848676.

The previous prime is 121273007. The next prime is 121273021. The reversal of 121273017 is 710372121.

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: 710372121 = 3 ⋅236790707.

It is a cyclic number.

It is not a de Polignac number, because 121273017 - 2⁷ = 121272889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121273007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20212167 + ... + 20212172.

It is an arithmetic number, because the mean of its divisors is an integer number (40424340).

Almost surely, 2^121273017 is an apocalyptic number.

It is an amenable number.

121273017 is a deficient number, since it is larger than the sum of its proper divisors (40424343).

121273017 is an equidigital number, since it uses as much as digits as its factorization.

121273017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40424342.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 121273017 is about 11012.4028713083. The cubic root of 121273017 is about 494.9804665284.

The spelling of 121273017 in words is "one hundred twenty-one million, two hundred seventy-three thousand, seventeen".