12213320022 has 128 divisors (see below), whose sum is σ = 28835896320. Its totient is φ = 3823902720.

The previous prime is 12213320011. The next prime is 12213320029. The reversal of 12213320022 is 22002331221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12213319977 and 12213320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213320029) 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, 26492872 + ... + 26493332.

It is an arithmetic number, because the mean of its divisors is an integer number (225280440).

Almost surely, 2^12213320022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12213320022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14417948160).

12213320022 is an abundant number, since it is smaller than the sum of its proper divisors (16622576298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213320022 is a wasteful number, since it uses less digits than its factorization.

12213320022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12213320022 its reverse (22002331221), we get a palindrome (34215651243).

The spelling of 12213320022 in words is "twelve billion, two hundred thirteen million, three hundred twenty thousand, twenty-two".