1311222119 has 2 divisors, whose sum is σ = 1311222120. Its totient is φ = 1311222118.

The previous prime is 1311222109. The next prime is 1311222161. The reversal of 1311222119 is 9112221131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311222119 - 2¹² = 1311218023 is a prime.

It is a super-2 number, since 2×1311222119² = 3438606890709700322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311222094 and 1311222103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311222109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655611059 + 655611060.

It is an arithmetic number, because the mean of its divisors is an integer number (655611060).

Almost surely, 2^1311222119 is an apocalyptic number.

1311222119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311222119 is an equidigital number, since it uses as much as digits as its factorization.

1311222119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 23.

The square root of 1311222119 is about 36210.8011372298. The cubic root of 1311222119 is about 1094.5243359829.

The spelling of 1311222119 in words is "one billion, three hundred eleven million, two hundred twenty-two thousand, one hundred nineteen".