221020221221179 has 2 divisors, whose sum is σ = 221020221221180. Its totient is φ = 221020221221178.

The previous prime is 221020221221167. The next prime is 221020221221221. The reversal of 221020221221179 is 971122122020122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221020221221179 - 2⁵ = 221020221221147 is a prime.

It is a super-3 number, since 3×221020221221179³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (221020221291179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510110610589 + 110510110610590.

It is an arithmetic number, because the mean of its divisors is an integer number (110510110610590).

Almost surely, 2^{221020221221179} is an apocalyptic number.

221020221221179 is a deficient number, since it is larger than the sum of its proper divisors (1).

221020221221179 is an equidigital number, since it uses as much as digits as its factorization.

221020221221179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 221020221221179 in words is "two hundred twenty-one trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred seventy-nine".