1122111111287 has 2 divisors, whose sum is σ = 1122111111288. Its totient is φ = 1122111111286.

The previous prime is 1122111111263. The next prime is 1122111111307. The reversal of 1122111111287 is 7821111112211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1122111111287 - 2²⁸ = 1121842675831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122111110287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561055555643 + 561055555644.

It is an arithmetic number, because the mean of its divisors is an integer number (561055555644).

Almost surely, 2^{1122111111287} is an apocalyptic number.

1122111111287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122111111287 is an equidigital number, since it uses as much as digits as its factorization.

1122111111287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 29.

Adding to 1122111111287 its reverse (7821111112211), we get a palindrome (8943222223498).

The spelling of 1122111111287 in words is "one trillion, one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, two hundred eighty-seven".