12220422 has 32 divisors (see below), whose sum is σ = 25256448. Its totient is φ = 3939936.

The previous prime is 12220421. The next prime is 12220427. The reversal of 12220422 is 22402221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26163 + ... + 26625.

It is an arithmetic number, because the mean of its divisors is an integer number (789264).

Almost surely, 2^12220422 is an apocalyptic number.

12220422 is an abundant number, since it is smaller than the sum of its proper divisors (13036026).

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

12220422 is a wasteful number, since it uses less digits than its factorization.

12220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 12220422 is about 3495.7720177380. The cubic root of 12220422 is about 230.3361310837.

Adding to 12220422 its reverse (22402221), we get a palindrome (34622643).

The spelling of 12220422 in words is "twelve million, two hundred twenty thousand, four hundred twenty-two".