121221321123179 has 2 divisors, whose sum is σ = 121221321123180. Its totient is φ = 121221321123178.

The previous prime is 121221321123127. The next prime is 121221321123223. The reversal of 121221321123179 is 971321123122121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121221321123179 - 2³⁶ = 121152601646443 is a prime.

It is not a weakly prime, because it can be changed into another prime (121221321122179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610660561589 + 60610660561590.

It is an arithmetic number, because the mean of its divisors is an integer number (60610660561590).

Almost surely, 2^{121221321123179} is an apocalyptic number.

121221321123179 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221321123179 is an equidigital number, since it uses as much as digits as its factorization.

121221321123179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The spelling of 121221321123179 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred seventy-nine".