12222620 has 12 divisors (see below), whose sum is σ = 25667544. Its totient is φ = 4889040.

The previous prime is 12222593. The next prime is 12222629. The reversal of 12222620 is 2622221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305546 + ... + 305585.

It is an arithmetic number, because the mean of its divisors is an integer number (2138962).

Almost surely, 2^12222620 is an apocalyptic number.

12222620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222620 is an abundant number, since it is smaller than the sum of its proper divisors (13444924).

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

12222620 is a wasteful number, since it uses less digits than its factorization.

12222620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611140 (or 611138 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12222620 is about 3496.0863833721. The cubic root of 12222620 is about 230.3499398940.

Adding to 12222620 its reverse (2622221), we get a palindrome (14844841).

The spelling of 12222620 in words is "twelve million, two hundred twenty-two thousand, six hundred twenty".