2211211220191 has 2 divisors, whose sum is σ = 2211211220192. Its totient is φ = 2211211220190.

The previous prime is 2211211220159. The next prime is 2211211220249. The reversal of 2211211220191 is 1910221121122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2211211220191 - 2⁵ = 2211211220159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211211220291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105605610095 + 1105605610096.

It is an arithmetic number, because the mean of its divisors is an integer number (1105605610096).

Almost surely, 2^{2211211220191} is an apocalyptic number.

2211211220191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211211220191 is an equidigital number, since it uses as much as digits as its factorization.

2211211220191 is an evil number, because the sum of its binary digits is even.

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

The spelling of 2211211220191 in words is "two trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty thousand, one hundred ninety-one".