1112131081 has 2 divisors, whose sum is σ = 1112131082. Its totient is φ = 1112131080.

The previous prime is 1112131049. The next prime is 1112131133. The reversal of 1112131081 is 1801312111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697805056 + 414326025 = 26416^2 + 20355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112131081 - 2⁵ = 1112131049 is a prime.

It is a super-2 number, since 2×1112131081² = 2473671082652457122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1112131021) 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, 556065540 + 556065541.

It is an arithmetic number, because the mean of its divisors is an integer number (556065541).

Almost surely, 2^1112131081 is an apocalyptic number.

It is an amenable number.

1112131081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112131081 is an equidigital number, since it uses as much as digits as its factorization.

1112131081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

The square root of 1112131081 is about 33348.6293721346. The cubic root of 1112131081 is about 1036.0610000829.

Adding to 1112131081 its reverse (1801312111), we get a palindrome (2913443192).

The spelling of 1112131081 in words is "one billion, one hundred twelve million, one hundred thirty-one thousand, eighty-one".