221002222020193 has 2 divisors, whose sum is σ = 221002222020194. Its totient is φ = 221002222020192.

The previous prime is 221002222020169. The next prime is 221002222020253. The reversal of 221002222020193 is 391020222200122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178339678854544 + 42662543165649 = 13354388^2 + 6531657^2 .

It is a cyclic number.

It is not a de Polignac number, because 221002222020193 - 2⁵ = 221002222020161 is a prime.

It is not a weakly prime, because it can be changed into another prime (221002222020113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501111010096 + 110501111010097.

It is an arithmetic number, because the mean of its divisors is an integer number (110501111010097).

Almost surely, 2^{221002222020193} is an apocalyptic number.

It is an amenable number.

221002222020193 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002222020193 is an equidigital number, since it uses as much as digits as its factorization.

221002222020193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 221002222020193 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-two million, twenty thousand, one hundred ninety-three".