12190220 has 48 divisors (see below), whose sum is σ = 29870400. Its totient is φ = 4177152.

The previous prime is 12190219. The next prime is 12190231. The reversal of 12190220 is 2209121.

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, 5972 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (622300).

Almost surely, 2^12190220 is an apocalyptic number.

12190220 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 12190220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14935200).

12190220 is an abundant number, since it is smaller than the sum of its proper divisors (17680180).

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

12190220 is a wasteful number, since it uses less digits than its factorization.

12190220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12190220 is about 3491.4495557003. The cubic root of 12190220 is about 230.1462208211.

Adding to 12190220 its reverse (2209121), we get a palindrome (14399341).

The spelling of 12190220 in words is "twelve million, one hundred ninety thousand, two hundred twenty".