220222219991 has 2 divisors, whose sum is σ = 220222219992. Its totient is φ = 220222219990.

The previous prime is 220222219981. The next prime is 220222220033. The reversal of 220222219991 is 199912222022.

220222219991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220222219991 - 2³⁴ = 203042350807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220222219981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110111109995 + 110111109996.

It is an arithmetic number, because the mean of its divisors is an integer number (110111109996).

Almost surely, 2^220222219991 is an apocalyptic number.

220222219991 is a deficient number, since it is larger than the sum of its proper divisors (1).

220222219991 is an equidigital number, since it uses as much as digits as its factorization.

220222219991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 220222219991 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred nineteen thousand, nine hundred ninety-one".