1111112287 has 2 divisors, whose sum is σ = 1111112288. Its totient is φ = 1111112286.

The previous prime is 1111112281. The next prime is 1111112291. The reversal of 1111112287 is 7822111111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111112287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111112281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555556143 + 555556144.

It is an arithmetic number, because the mean of its divisors is an integer number (555556144).

Almost surely, 2^1111112287 is an apocalyptic number.

1111112287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111112287 is an equidigital number, since it uses as much as digits as its factorization.

1111112287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 25.

The square root of 1111112287 is about 33333.3509716620. The cubic root of 1111112287 is about 1035.7445340272.

Adding to 1111112287 its reverse (7822111111), we get a palindrome (8933223398).

The spelling of 1111112287 in words is "one billion, one hundred eleven million, one hundred twelve thousand, two hundred eighty-seven".