121570772473 has 2 divisors, whose sum is σ = 121570772474. Its totient is φ = 121570772472.

The previous prime is 121570772303. The next prime is 121570772483. The reversal of 121570772473 is 374277075121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119185133824 + 2385638649 = 345232^2 + 48843^2 .

It is an emirp because it is prime and its reverse (374277075121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121570772473 - 2⁹ = 121570771961 is a prime.

It is not a weakly prime, because it can be changed into another prime (121570772483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60785386236 + 60785386237.

It is an arithmetic number, because the mean of its divisors is an integer number (60785386237).

Almost surely, 2^121570772473 is an apocalyptic number.

It is an amenable number.

121570772473 is a deficient number, since it is larger than the sum of its proper divisors (1).

121570772473 is an equidigital number, since it uses as much as digits as its factorization.

121570772473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576240, while the sum is 46.

The spelling of 121570772473 in words is "one hundred twenty-one billion, five hundred seventy million, seven hundred seventy-two thousand, four hundred seventy-three".