1111234222991 has 2 divisors, whose sum is σ = 1111234222992. Its totient is φ = 1111234222990.

The previous prime is 1111234222957. The next prime is 1111234223069. The reversal of 1111234222991 is 1992224321111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111234222991 - 2¹⁰ = 1111234221967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111234222951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555617111495 + 555617111496.

It is an arithmetic number, because the mean of its divisors is an integer number (555617111496).

Almost surely, 2^{1111234222991} is an apocalyptic number.

1111234222991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111234222991 is an equidigital number, since it uses as much as digits as its factorization.

1111234222991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The spelling of 1111234222991 in words is "one trillion, one hundred eleven billion, two hundred thirty-four million, two hundred twenty-two thousand, nine hundred ninety-one".