121707247 has 2 divisors, whose sum is σ = 121707248. Its totient is φ = 121707246.

The previous prime is 121707197. The next prime is 121707251. The reversal of 121707247 is 742707121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121707247 - 2¹⁹ = 121182959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121707347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60853623 + 60853624.

It is an arithmetic number, because the mean of its divisors is an integer number (60853624).

Almost surely, 2^121707247 is an apocalyptic number.

121707247 is a deficient number, since it is larger than the sum of its proper divisors (1).

121707247 is an equidigital number, since it uses as much as digits as its factorization.

121707247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 121707247 is about 11032.1007518967. The cubic root of 121707247 is about 495.5705382799.

The spelling of 121707247 in words is "one hundred twenty-one million, seven hundred seven thousand, two hundred forty-seven".