2211220110191 has 2 divisors, whose sum is σ = 2211220110192. Its totient is φ = 2211220110190.

The previous prime is 2211220110131. The next prime is 2211220110241. The reversal of 2211220110191 is 1910110221122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211220110191 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211220110131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105610055095 + 1105610055096.

It is an arithmetic number, because the mean of its divisors is an integer number (1105610055096).

Almost surely, 2^{2211220110191} is an apocalyptic number.

2211220110191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211220110191 is an equidigital number, since it uses as much as digits as its factorization.

2211220110191 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 23.

The spelling of 2211220110191 in words is "two trillion, two hundred eleven billion, two hundred twenty million, one hundred ten thousand, one hundred ninety-one".