121751527193 has 2 divisors, whose sum is σ = 121751527194. Its totient is φ = 121751527192.

The previous prime is 121751527181. The next prime is 121751527199. The reversal of 121751527193 is 391725157121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63618459529 + 58133067664 = 252227^2 + 241108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121751527193 is a prime.

It is not a weakly prime, because it can be changed into another prime (121751527199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60875763596 + 60875763597.

It is an arithmetic number, because the mean of its divisors is an integer number (60875763597).

Almost surely, 2^121751527193 is an apocalyptic number.

It is an amenable number.

121751527193 is a deficient number, since it is larger than the sum of its proper divisors (1).

121751527193 is an equidigital number, since it uses as much as digits as its factorization.

121751527193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 44.

The spelling of 121751527193 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred twenty-seven thousand, one hundred ninety-three".