2211221102191 has 2 divisors, whose sum is σ = 2211221102192. Its totient is φ = 2211221102190.

The previous prime is 2211221102161. The next prime is 2211221102213. The reversal of 2211221102191 is 1912011221122.

2211221102191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2211221102191 - 2¹³ = 2211221093999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211221102131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105610551095 + 1105610551096.

It is an arithmetic number, because the mean of its divisors is an integer number (1105610551096).

Almost surely, 2^{2211221102191} is an apocalyptic number.

2211221102191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211221102191 is an equidigital number, since it uses as much as digits as its factorization.

2211221102191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 2211221102191 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, one hundred two thousand, one hundred ninety-one".