12211022320 has 160 divisors (see below), whose sum is σ = 33105024000. Its totient is φ = 4102146048.

The previous prime is 12211022297. The next prime is 12211022321. The reversal of 12211022320 is 2322011221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12211022294 and 12211022303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211022321) 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, 19790652 + ... + 19791268.

It is an arithmetic number, because the mean of its divisors is an integer number (206906400).

Almost surely, 2^12211022320 is an apocalyptic number.

12211022320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16552512000).

12211022320 is an abundant number, since it is smaller than the sum of its proper divisors (20894001680).

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

12211022320 is a wasteful number, since it uses less digits than its factorization.

12211022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12211022320 its reverse (2322011221), we get a palindrome (14533033541).

The spelling of 12211022320 in words is "twelve billion, two hundred eleven million, twenty-two thousand, three hundred twenty".