12113333221 has 32 divisors (see below), whose sum is σ = 14283174528. Its totient is φ = 10149335040.

The previous prime is 12113333209. The next prime is 12113333257. The reversal of 12113333221 is 12233331121.

It is a cyclic number.

It is not a de Polignac number, because 12113333221 - 2¹⁵ = 12113300453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12113333192 and 12113333201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113333521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7799181 + ... + 7800733.

It is an arithmetic number, because the mean of its divisors is an integer number (446349204).

Almost surely, 2^12113333221 is an apocalyptic number.

12113333221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12113333221 is a deficient number, since it is larger than the sum of its proper divisors (2169841307).

12113333221 is a wasteful number, since it uses less digits than its factorization.

12113333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421.

The product of its digits is 648, while the sum is 22.

Adding to 12113333221 its reverse (12233331121), we get a palindrome (24346664342).

The spelling of 12113333221 in words is "twelve billion, one hundred thirteen million, three hundred thirty-three thousand, two hundred twenty-one".