12252220 has 12 divisors (see below), whose sum is σ = 25729704. Its totient is φ = 4900880.

The previous prime is 12252197. The next prime is 12252259. The reversal of 12252220 is 2225221.

It is a junction number, because it is equal to n+sod(n) for n = 12252194 and 12252203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306286 + ... + 306325.

It is an arithmetic number, because the mean of its divisors is an integer number (2144142).

Almost surely, 2^12252220 is an apocalyptic number.

12252220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12252220 is an abundant number, since it is smaller than the sum of its proper divisors (13477484).

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

12252220 is a wasteful number, since it uses less digits than its factorization.

12252220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612620 (or 612618 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12252220 is about 3500.3171284899. The cubic root of 12252220 is about 230.5357391612.

Adding to 12252220 its reverse (2225221), we get a palindrome (14477441).

The spelling of 12252220 in words is "twelve million, two hundred fifty-two thousand, two hundred twenty".