222220111221191 has 2 divisors, whose sum is σ = 222220111221192. Its totient is φ = 222220111221190.

The previous prime is 222220111221181. The next prime is 222220111221217. The reversal of 222220111221191 is 191122111022222.

222220111221191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222220111221191 - 2²² = 222220107026887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222220111221181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110055610595 + 111110055610596.

It is an arithmetic number, because the mean of its divisors is an integer number (111110055610596).

Almost surely, 2^{222220111221191} is an apocalyptic number.

222220111221191 is a deficient number, since it is larger than the sum of its proper divisors (1).

222220111221191 is an equidigital number, since it uses as much as digits as its factorization.

222220111221191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 222220111221191 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, one hundred ninety-one".