12218003712 has 360 divisors, whose sum is σ = 38226397440. Its totient is φ = 3876802560.

The previous prime is 12218003701. The next prime is 12218003747. The reversal of 12218003712 is 21730081221.

It is a super-2 number, since 2×12218003712² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53353614 + ... + 53353842.

Almost surely, 2^12218003712 is an apocalyptic number.

12218003712 is a gapful number since it is divisible by the number (12) 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 12218003712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19113198720).

12218003712 is an abundant number, since it is smaller than the sum of its proper divisors (26008393728).

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

12218003712 is an equidigital number, since it uses as much as digits as its factorization.

12218003712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

Adding to 12218003712 its reverse (21730081221), we get a palindrome (33948084933).

The spelling of 12218003712 in words is "twelve billion, two hundred eighteen million, three thousand, seven hundred twelve".