11001143 has 2 divisors, whose sum is σ = 11001144. Its totient is φ = 11001142.

The previous prime is 11001139. The next prime is 11001169. The reversal of 11001143 is 34110011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11001143 - 2² = 11001139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500571 + 5500572.

It is an arithmetic number, because the mean of its divisors is an integer number (5500572).

Almost surely, 2^11001143 is an apocalyptic number.

11001143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001143 is an equidigital number, since it uses as much as digits as its factorization.

11001143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 11001143 is about 3316.7970996128. The cubic root of 11001143 is about 222.4057118485.

Adding to 11001143 its reverse (34110011), we get a palindrome (45111154).

The spelling of 11001143 in words is "eleven million, one thousand, one hundred forty-three".