2221112112091 has 2 divisors, whose sum is σ = 2221112112092. Its totient is φ = 2221112112090.

The previous prime is 2221112112019. The next prime is 2221112112137. The reversal of 2221112112091 is 1902112111222.

Together with previous prime (2221112112019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221112112091 - 2¹⁵ = 2221112079323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221112112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110556056045 + 1110556056046.

It is an arithmetic number, because the mean of its divisors is an integer number (1110556056046).

Almost surely, 2^{2221112112091} is an apocalyptic number.

2221112112091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221112112091 is an equidigital number, since it uses as much as digits as its factorization.

2221112112091 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 2221112112091 in words is "two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, ninety-one".