12211232113 has 16 divisors (see below), whose sum is σ = 13180406400. Its totient is φ = 11278068480.

The previous prime is 12211232083. The next prime is 12211232119. The reversal of 12211232113 is 31123211221.

It is a cyclic number.

It is not a de Polignac number, because 12211232113 - 2⁵ = 12211232081 is a prime.

It is a super-2 number, since 2×12211232113² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (12211232119) 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, 84348 + ... + 177586.

It is an arithmetic number, because the mean of its divisors is an integer number (823775400).

Almost surely, 2^12211232113 is an apocalyptic number.

It is an amenable number.

12211232113 is a deficient number, since it is larger than the sum of its proper divisors (969174287).

12211232113 is a wasteful number, since it uses less digits than its factorization.

12211232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93432.

The product of its digits is 144, while the sum is 19.

Adding to 12211232113 its reverse (31123211221), we get a palindrome (43334443334).

It can be divided in two parts, 1221123 and 2113, that added together give a square (1223236 = 1106²).

The spelling of 12211232113 in words is "twelve billion, two hundred eleven million, two hundred thirty-two thousand, one hundred thirteen".