121570772579 has 2 divisors, whose sum is σ = 121570772580. Its totient is φ = 121570772578.

The previous prime is 121570772573. The next prime is 121570772621. The reversal of 121570772579 is 975277075121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121570772579 - 2¹⁶ = 121570707043 is a prime.

It is a super-2 number, since 2×121570772579² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121570772579.

It is not a weakly prime, because it can be changed into another prime (121570772573) 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, 60785386289 + 60785386290.

It is an arithmetic number, because the mean of its divisors is an integer number (60785386290).

Almost surely, 2^121570772579 is an apocalyptic number.

121570772579 is a deficient number, since it is larger than the sum of its proper divisors (1).

121570772579 is an equidigital number, since it uses as much as digits as its factorization.

121570772579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160900, while the sum is 53.

The spelling of 121570772579 in words is "one hundred twenty-one billion, five hundred seventy million, seven hundred seventy-two thousand, five hundred seventy-nine".