2121313221179 has 2 divisors, whose sum is σ = 2121313221180. Its totient is φ = 2121313221178.

The previous prime is 2121313221173. The next prime is 2121313221199. The reversal of 2121313221179 is 9711223131212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121313221179 - 2⁴ = 2121313221163 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121313221173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060656610589 + 1060656610590.

It is an arithmetic number, because the mean of its divisors is an integer number (1060656610590).

Almost surely, 2^{2121313221179} is an apocalyptic number.

2121313221179 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121313221179 is an equidigital number, since it uses as much as digits as its factorization.

2121313221179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The spelling of 2121313221179 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, two hundred twenty-one thousand, one hundred seventy-nine".