121707623 has 2 divisors, whose sum is σ = 121707624. Its totient is φ = 121707622.

The previous prime is 121707617. The next prime is 121707647. The reversal of 121707623 is 326707121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121707623 - 2⁸ = 121707367 is a prime.

It is a super-3 number, since 3×121707623³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121707613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60853811 + 60853812.

It is an arithmetic number, because the mean of its divisors is an integer number (60853812).

Almost surely, 2^121707623 is an apocalyptic number.

121707623 is a deficient number, since it is larger than the sum of its proper divisors (1).

121707623 is an equidigital number, since it uses as much as digits as its factorization.

121707623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 121707623 is about 11032.1177930622. The cubic root of 121707623 is about 495.5710486147.

The spelling of 121707623 in words is "one hundred twenty-one million, seven hundred seven thousand, six hundred twenty-three".