12220112213 has 4 divisors (see below), whose sum is σ = 12229535340. Its totient is φ = 12210689088.

The previous prime is 12220112209. The next prime is 12220112269. The reversal of 12220112213 is 31221102221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31221102221 = 23 ⋅1357439227.

It can be written as a sum of positive squares in 2 ways, for example, as 12030141124 + 189971089 = 109682^2 + 13783^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220112213 - 2² = 12220112209 is a prime.

It is a super-2 number, since 2×12220112213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220112191 and 12220112200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220112293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4709618 + ... + 4712211.

It is an arithmetic number, because the mean of its divisors is an integer number (3057383835).

Almost surely, 2^12220112213 is an apocalyptic number.

It is an amenable number.

12220112213 is a deficient number, since it is larger than the sum of its proper divisors (9423127).

12220112213 is an equidigital number, since it uses as much as digits as its factorization.

12220112213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423126.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12220112213 its reverse (31221102221), we get a palindrome (43441214434).

The spelling of 12220112213 in words is "twelve billion, two hundred twenty million, one hundred twelve thousand, two hundred thirteen".