220021221179 has 2 divisors, whose sum is σ = 220021221180. Its totient is φ = 220021221178.

The previous prime is 220021221151. The next prime is 220021221181. The reversal of 220021221179 is 971122120022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220021221179 - 2¹⁶ = 220021155643 is a prime.

Together with 220021221181, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220021221779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010610589 + 110010610590.

It is an arithmetic number, because the mean of its divisors is an integer number (110010610590).

Almost surely, 2^220021221179 is an apocalyptic number.

220021221179 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021221179 is an equidigital number, since it uses as much as digits as its factorization.

220021221179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 220021221179 in words is "two hundred twenty billion, twenty-one million, two hundred twenty-one thousand, one hundred seventy-nine".