11111002143 has 4 divisors (see below), whose sum is σ = 14814669528. Its totient is φ = 7407334760.

The previous prime is 11111002099. The next prime is 11111002181. The reversal of 11111002143 is 34120011111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34120011111 = 3 ⋅11373337037.

It is a cyclic number.

It is not a de Polignac number, because 11111002143 - 2¹⁶ = 11110936607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111003143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851833688 + ... + 1851833693.

It is an arithmetic number, because the mean of its divisors is an integer number (3703667382).

Almost surely, 2^11111002143 is an apocalyptic number.

11111002143 is a deficient number, since it is larger than the sum of its proper divisors (3703667385).

11111002143 is an equidigital number, since it uses as much as digits as its factorization.

11111002143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703667384.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11111002143 its reverse (34120011111), we get a palindrome (45231013254).

The spelling of 11111002143 in words is "eleven billion, one hundred eleven million, two thousand, one hundred forty-three".