121751560523 has 2 divisors, whose sum is σ = 121751560524. Its totient is φ = 121751560522.

The previous prime is 121751560501. The next prime is 121751560543. The reversal of 121751560523 is 325065157121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121751560523 - 2⁸ = 121751560267 is a prime.

It is not a weakly prime, because it can be changed into another prime (121751560543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60875780261 + 60875780262.

It is an arithmetic number, because the mean of its divisors is an integer number (60875780262).

Almost surely, 2^121751560523 is an apocalyptic number.

121751560523 is a deficient number, since it is larger than the sum of its proper divisors (1).

121751560523 is an equidigital number, since it uses as much as digits as its factorization.

121751560523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 121751560523 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred sixty thousand, five hundred twenty-three".