121351751 has 2 divisors, whose sum is σ = 121351752. Its totient is φ = 121351750.

The previous prime is 121351739. The next prime is 121351757. The reversal of 121351751 is 157153121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121351751 - 2¹⁰ = 121350727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121351751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121351757) 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, 60675875 + 60675876.

It is an arithmetic number, because the mean of its divisors is an integer number (60675876).

Almost surely, 2^121351751 is an apocalyptic number.

121351751 is a deficient number, since it is larger than the sum of its proper divisors (1).

121351751 is an equidigital number, since it uses as much as digits as its factorization.

121351751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 26.

The square root of 121351751 is about 11015.9770787706. The cubic root of 121351751 is about 495.0875619681.

The spelling of 121351751 in words is "one hundred twenty-one million, three hundred fifty-one thousand, seven hundred fifty-one".