1112222281 has 2 divisors, whose sum is σ = 1112222282. Its totient is φ = 1112222280.

The previous prime is 1112222269. The next prime is 1112222291. The reversal of 1112222281 is 1822222111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1057225225 + 54997056 = 32515^2 + 7416^2 .

It is an emirp because it is prime and its reverse (1822222111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112222281 - 2⁵ = 1112222249 is a prime.

It is a super-2 number, since 2×1112222281² = 2474076804705685922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1112222291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556111140 + 556111141.

It is an arithmetic number, because the mean of its divisors is an integer number (556111141).

Almost surely, 2^1112222281 is an apocalyptic number.

It is an amenable number.

1112222281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112222281 is an equidigital number, since it uses as much as digits as its factorization.

1112222281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256, while the sum is 22.

The square root of 1112222281 is about 33349.9967166415. The cubic root of 1112222281 is about 1036.0893199402.

Adding to 1112222281 its reverse (1822222111), we get a palindrome (2934444392).

The spelling of 1112222281 in words is "one billion, one hundred twelve million, two hundred twenty-two thousand, two hundred eighty-one".