2122222210091 has 2 divisors, whose sum is σ = 2122222210092. Its totient is φ = 2122222210090.

The previous prime is 2122222210063. The next prime is 2122222210109. The reversal of 2122222210091 is 1900122222212.

Together with next prime (2122222210109) 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 2122222210091 - 2¹⁸ = 2122221947947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122222210091.

It is not a weakly prime, because it can be changed into another prime (2122222210001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061111105045 + 1061111105046.

It is an arithmetic number, because the mean of its divisors is an integer number (1061111105046).

Almost surely, 2^{2122222210091} is an apocalyptic number.

2122222210091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122222210091 is an equidigital number, since it uses as much as digits as its factorization.

2122222210091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 2122222210091 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred ten thousand, ninety-one".