221002002000191 has 2 divisors, whose sum is σ = 221002002000192. Its totient is φ = 221002002000190.

The previous prime is 221002002000163. The next prime is 221002002000259. The reversal of 221002002000191 is 191000200200122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221002002000191 - 2²² = 221001997805887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221002002000491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501001000095 + 110501001000096.

It is an arithmetic number, because the mean of its divisors is an integer number (110501001000096).

Almost surely, 2^{221002002000191} is an apocalyptic number.

221002002000191 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002002000191 is an equidigital number, since it uses as much as digits as its factorization.

221002002000191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 221002002000191 in words is "two hundred twenty-one trillion, two billion, two million, one hundred ninety-one", and thus it is an aban number.