2111222310191 has 2 divisors, whose sum is σ = 2111222310192. Its totient is φ = 2111222310190.

The previous prime is 2111222310173. The next prime is 2111222310217. The reversal of 2111222310191 is 1910132221112.

It is an a-pointer prime, because the next prime (2111222310217) can be obtained adding 2111222310191 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111222310191 - 2³⁸ = 1836344403247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111222310191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111222310151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055611155095 + 1055611155096.

It is an arithmetic number, because the mean of its divisors is an integer number (1055611155096).

Almost surely, 2^{2111222310191} is an apocalyptic number.

2111222310191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111222310191 is an equidigital number, since it uses as much as digits as its factorization.

2111222310191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 2111222310191 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, three hundred ten thousand, one hundred ninety-one".