121349279 has 2 divisors, whose sum is σ = 121349280. Its totient is φ = 121349278.

The previous prime is 121349269. The next prime is 121349297. The reversal of 121349279 is 972943121.

Together with next prime (121349297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121349279 - 2²⁰ = 120300703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121349269) 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 as a sum of consecutive naturals, namely, 60674639 + 60674640.

It is an arithmetic number, because the mean of its divisors is an integer number (60674640).

Almost surely, 2^121349279 is an apocalyptic number.

121349279 is a deficient number, since it is larger than the sum of its proper divisors (1).

121349279 is an equidigital number, since it uses as much as digits as its factorization.

121349279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 121349279 is about 11015.8648775300. The cubic root of 121349279 is about 495.0842002125.

The spelling of 121349279 in words is "one hundred twenty-one million, three hundred forty-nine thousand, two hundred seventy-nine".