12022221120 has 448 divisors, whose sum is σ = 49458554880. Its totient is φ = 2402721792.

The previous prime is 12022221083. The next prime is 12022221137. The reversal of 12022221120 is 2112222021.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12022221120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1656219 + ... + 1663461.

It is an arithmetic number, because the mean of its divisors is an integer number (110398560).

Almost surely, 2^12022221120 is an apocalyptic number.

12022221120 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 12022221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24729277440).

12022221120 is an abundant number, since it is smaller than the sum of its proper divisors (37436333760).

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

12022221120 is a wasteful number, since it uses less digits than its factorization.

12022221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302 (or 7292 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12022221120 its reverse (2112222021), we get a palindrome (14134443141).

Subtracting from 12022221120 its reverse (2112222021), we obtain a palindrome (9909999099).

The spelling of 12022221120 in words is "twelve billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty".