12220016 has 10 divisors (see below), whose sum is σ = 23676312. Its totient is φ = 6110000.

The previous prime is 12220003. The next prime is 12220031. The reversal of 12220016 is 61002221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381860 + ... + 381891.

Almost surely, 2^12220016 is an apocalyptic number.

12220016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12220016 is a deficient number, since it is larger than the sum of its proper divisors (11456296).

12220016 is an equidigital number, since it uses as much as digits as its factorization.

12220016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763759 (or 763753 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12220016 is about 3495.7139471072. The cubic root of 12220016 is about 230.3335802306. Note that the first 3 decimals are identical.

Adding to 12220016 its reverse (61002221), we get a palindrome (73222237).

The spelling of 12220016 in words is "twelve million, two hundred twenty thousand, sixteen".