111243144011 has 4 divisors (see below), whose sum is σ = 112903489512. Its totient is φ = 109582798512.

The previous prime is 111243143993. The next prime is 111243144031. The reversal of 111243144011 is 110441342111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111243144011 - 2¹⁴ = 111243127627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111243144031) 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, 830172650 + ... + 830172783.

It is an arithmetic number, because the mean of its divisors is an integer number (28225872378).

Almost surely, 2^111243144011 is an apocalyptic number.

111243144011 is a deficient number, since it is larger than the sum of its proper divisors (1660345501).

111243144011 is an equidigital number, since it uses as much as digits as its factorization.

111243144011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660345500.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 111243144011 its reverse (110441342111), we get a palindrome (221684486122).

The spelling of 111243144011 in words is "one hundred eleven billion, two hundred forty-three million, one hundred forty-four thousand, eleven".