121272115 has 4 divisors (see below), whose sum is σ = 145526544. Its totient is φ = 97017688.

The previous prime is 121272059. The next prime is 121272121. The reversal of 121272115 is 511272121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121272115 - 2⁹ = 121271603 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12127207 + ... + 12127216.

It is an arithmetic number, because the mean of its divisors is an integer number (36381636).

Almost surely, 2^121272115 is an apocalyptic number.

121272115 is a deficient number, since it is larger than the sum of its proper divisors (24254429).

121272115 is an equidigital number, since it uses as much as digits as its factorization.

121272115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24254428.

The product of its digits is 280, while the sum is 22.

The square root of 121272115 is about 11012.3619174090. The cubic root of 121272115 is about 494.9792393429.

The spelling of 121272115 in words is "one hundred twenty-one million, two hundred seventy-two thousand, one hundred fifteen".