32220012 has 24 divisors (see below), whose sum is σ = 82014912. Its totient is φ = 9763600.

The previous prime is 32219989. The next prime is 32220037. The reversal of 32220012 is 21002223.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 32220012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121914 + ... + 122177.

It is an arithmetic number, because the mean of its divisors is an integer number (3417288).

Almost surely, 2^32220012 is an apocalyptic number.

It is an amenable number.

32220012 is an abundant number, since it is smaller than the sum of its proper divisors (49794900).

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

32220012 is a wasteful number, since it uses less digits than its factorization.

32220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244109 (or 244107 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 32220012 is about 5676.2674355601. The cubic root of 32220012 is about 318.2061477302.

Adding to 32220012 its reverse (21002223), we get a palindrome (53222235).

The spelling of 32220012 in words is "thirty-two million, two hundred twenty thousand, twelve".