121559630273 has 2 divisors, whose sum is σ = 121559630274. Its totient is φ = 121559630272.

The previous prime is 121559630219. The next prime is 121559630323. The reversal of 121559630273 is 372036955121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118182625729 + 3377004544 = 343777^2 + 58112^2 .

It is a cyclic number.

It is not a de Polignac number, because 121559630273 - 2⁶ = 121559630209 is a prime.

It is not a weakly prime, because it can be changed into another prime (121559630473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60779815136 + 60779815137.

It is an arithmetic number, because the mean of its divisors is an integer number (60779815137).

Almost surely, 2^121559630273 is an apocalyptic number.

It is an amenable number.

121559630273 is a deficient number, since it is larger than the sum of its proper divisors (1).

121559630273 is an equidigital number, since it uses as much as digits as its factorization.

121559630273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 121559630273 in words is "one hundred twenty-one billion, five hundred fifty-nine million, six hundred thirty thousand, two hundred seventy-three".