12214220 has 24 divisors (see below), whose sum is σ = 26535600. Its totient is φ = 4716992.

The previous prime is 12214183. The next prime is 12214243. The reversal of 12214220 is 2241221.

It is a junction number, because it is equal to n+sod(n) for n = 12214195 and 12214204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9950 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (1105650).

Almost surely, 2^12214220 is an apocalyptic number.

12214220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12214220 is an abundant number, since it is smaller than the sum of its proper divisors (14321380).

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

12214220 is a wasteful number, since it uses less digits than its factorization.

12214220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21097 (or 21095 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 12214220 is about 3494.8848335818. The cubic root of 12214220 is about 230.2971584410.

Adding to 12214220 its reverse (2241221), we get a palindrome (14455441).

The spelling of 12214220 in words is "twelve million, two hundred fourteen thousand, two hundred twenty".