2112221022091 has 2 divisors, whose sum is σ = 2112221022092. Its totient is φ = 2112221022090.

The previous prime is 2112221022073. The next prime is 2112221022133. The reversal of 2112221022091 is 1902201222112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112221022091 - 2¹¹ = 2112221020043 is a prime.

It is a super-2 number, since 2×2112221022091² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112221022001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056110511045 + 1056110511046.

It is an arithmetic number, because the mean of its divisors is an integer number (1056110511046).

Almost surely, 2^{2112221022091} is an apocalyptic number.

2112221022091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112221022091 is an equidigital number, since it uses as much as digits as its factorization.

2112221022091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 2112221022091 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, twenty-two thousand, ninety-one".