11243321111 has 16 divisors (see below), whose sum is σ = 12412711296. Its totient is φ = 10098900000.

The previous prime is 11243321107. The next prime is 11243321147. The reversal of 11243321111 is 11112334211.

It is a cyclic number.

It is not a de Polignac number, because 11243321111 - 2² = 11243321107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243321911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535196 + ... + 555806.

It is an arithmetic number, because the mean of its divisors is an integer number (775794456).

Almost surely, 2^11243321111 is an apocalyptic number.

11243321111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11243321111 is a deficient number, since it is larger than the sum of its proper divisors (1169390185).

11243321111 is a wasteful number, since it uses less digits than its factorization.

11243321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21214.

The product of its digits is 144, while the sum is 20.

Adding to 11243321111 its reverse (11112334211), we get a palindrome (22355655322).

The spelling of 11243321111 in words is "eleven billion, two hundred forty-three million, three hundred twenty-one thousand, one hundred eleven".