1222112122291 has 2 divisors, whose sum is σ = 1222112122292. Its totient is φ = 1222112122290.

The previous prime is 1222112122289. The next prime is 1222112122403. The reversal of 1222112122291 is 1922212112221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222112122291 - 2¹ = 1222112122289 is a prime.

It is a super-2 number, since 2×1222112122291² (a number of 25 digits) contains 22 as substring.

Together with 1222112122289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1222112122201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611056061145 + 611056061146.

It is an arithmetic number, because the mean of its divisors is an integer number (611056061146).

Almost surely, 2^{1222112122291} is an apocalyptic number.

1222112122291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222112122291 is an equidigital number, since it uses as much as digits as its factorization.

1222112122291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The spelling of 1222112122291 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty-two thousand, two hundred ninety-one".