11243222111 has 24 divisors (see below), whose sum is σ = 12554250912. Its totient is φ = 10059526400.

The previous prime is 11243222101. The next prime is 11243222129. The reversal of 11243222111 is 11122234211.

It is a de Polignac number, because none of the positive numbers 2^k-11243222111 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 (11243222101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9423731 + ... + 9424923.

It is an arithmetic number, because the mean of its divisors is an integer number (523093788).

Almost surely, 2^11243222111 is an apocalyptic number.

11243222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11243222111 is a deficient number, since it is larger than the sum of its proper divisors (1311028801).

11243222111 is a wasteful number, since it uses less digits than its factorization.

11243222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383 (or 2372 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 11243222111 its reverse (11122234211), we get a palindrome (22365456322).

The spelling of 11243222111 in words is "eleven billion, two hundred forty-three million, two hundred twenty-two thousand, one hundred eleven".