1112213281 has 2 divisors, whose sum is σ = 1112213282. Its totient is φ = 1112213280.

The previous prime is 1112213269. The next prime is 1112213299. The reversal of 1112213281 is 1823122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942797025 + 169416256 = 30705^2 + 13016^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112213281 - 2²¹ = 1110116129 is a prime.

It is a super-2 number, since 2×1112213281² = 2474036764865569922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1112213681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556106640 + 556106641.

It is an arithmetic number, because the mean of its divisors is an integer number (556106641).

Almost surely, 2^1112213281 is an apocalyptic number.

It is an amenable number.

1112213281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112213281 is an equidigital number, since it uses as much as digits as its factorization.

1112213281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 22.

The square root of 1112213281 is about 33349.8617838215. The cubic root of 1112213281 is about 1036.0865252863.

Adding to 1112213281 its reverse (1823122111), we get a palindrome (2935335392).

The spelling of 1112213281 in words is "one billion, one hundred twelve million, two hundred thirteen thousand, two hundred eighty-one".