121293151 has 4 divisors (see below), whose sum is σ = 138620752. Its totient is φ = 103965552.

The previous prime is 121293149. The next prime is 121293157. The reversal of 121293151 is 151392121.

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 121293151 - 2¹ = 121293149 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 (121293157) 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, 8663790 + ... + 8663803.

It is an arithmetic number, because the mean of its divisors is an integer number (34655188).

Almost surely, 2^121293151 is an apocalyptic number.

121293151 is a deficient number, since it is larger than the sum of its proper divisors (17327601).

121293151 is an equidigital number, since it uses as much as digits as its factorization.

121293151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17327600.

The product of its digits is 540, while the sum is 25.

The square root of 121293151 is about 11013.3169844511. The cubic root of 121293151 is about 495.0078575769.

The spelling of 121293151 in words is "one hundred twenty-one million, two hundred ninety-three thousand, one hundred fifty-one".