12218880 has 160 divisors (see below), whose sum is σ = 41050944. Its totient is φ = 3096576.

The previous prime is 12218873. The next prime is 12218891. The reversal of 12218880 is 8881221.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284139 + ... + 284181.

Almost surely, 2^12218880 is an apocalyptic number.

12218880 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 12218880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20525472).

12218880 is an abundant number, since it is smaller than the sum of its proper divisors (28832064).

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

12218880 is an equidigital number, since it uses as much as digits as its factorization.

12218880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 12218880 is about 3495.5514586400. The cubic root of 12218880 is about 230.3264425680.

It can be divided in two parts, 1221 and 8880, that added together give a palindrome (10101).

The spelling of 12218880 in words is "twelve million, two hundred eighteen thousand, eight hundred eighty".