12220906 has 8 divisors (see below), whose sum is σ = 18642240. Its totient is φ = 6006828.

The previous prime is 12220903. The next prime is 12220921. The reversal of 12220906 is 60902221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12220903) 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, 51666 + ... + 51901.

It is an arithmetic number, because the mean of its divisors is an integer number (2330280).

Almost surely, 2^12220906 is an apocalyptic number.

12220906 is a deficient number, since it is larger than the sum of its proper divisors (6421334).

12220906 is a wasteful number, since it uses less digits than its factorization.

12220906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103628.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12220906 is about 3495.8412435350. The cubic root of 12220906 is about 230.3391719284.

The spelling of 12220906 in words is "twelve million, two hundred twenty thousand, nine hundred six".