11119681 has 2 divisors, whose sum is σ = 11119682. Its totient is φ = 11119680.

The previous prime is 11119679. The next prime is 11119687. The reversal of 11119681 is 18691111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 1478656 = 3105^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 11119681 - 2¹ = 11119679 is a prime.

It is a super-2 number, since 2×11119681² = 247294611083522, which contains 22 as substring.

Together with 11119679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11119687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5559840 + 5559841.

It is an arithmetic number, because the mean of its divisors is an integer number (5559841).

Almost surely, 2^11119681 is an apocalyptic number.

It is an amenable number.

11119681 is a deficient number, since it is larger than the sum of its proper divisors (1).

11119681 is an equidigital number, since it uses as much as digits as its factorization.

11119681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 28.

The square root of 11119681 is about 3334.6185688921. The cubic root of 11119681 is about 223.2016716108.

The spelling of 11119681 in words is "eleven million, one hundred nineteen thousand, six hundred eighty-one".