12111322223 has 64 divisors (see below), whose sum is σ = 17638871040. Its totient is φ = 7998566400.

The previous prime is 12111322211. The next prime is 12111322243. The reversal of 12111322223 is 32222311121.

It is not a de Polignac number, because 12111322223 - 2⁶ = 12111322159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12111322195 and 12111322204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111322243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 689018 + ... + 706376.

It is an arithmetic number, because the mean of its divisors is an integer number (275607360).

Almost surely, 2^12111322223 is an apocalyptic number.

12111322223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12111322223 is a deficient number, since it is larger than the sum of its proper divisors (5527548817).

12111322223 is a wasteful number, since it uses less digits than its factorization.

12111322223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17448.

The product of its digits is 288, while the sum is 20.

Adding to 12111322223 its reverse (32222311121), we get a palindrome (44333633344).

The spelling of 12111322223 in words is "twelve billion, one hundred eleven million, three hundred twenty-two thousand, two hundred twenty-three".