12220002 has 24 divisors (see below), whose sum is σ = 27870960. Its totient is φ = 3858840.

The previous prime is 12219997. The next prime is 12220003. The reversal of 12220002 is 20002221.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12220003) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 17524 + ... + 18207.

It is an arithmetic number, because the mean of its divisors is an integer number (1161290).

Almost surely, 2^12220002 is an apocalyptic number.

12220002 is an abundant number, since it is smaller than the sum of its proper divisors (15650958).

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

12220002 is a wasteful number, since it uses less digits than its factorization.

12220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35758 (or 35755 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 12220002 is about 3495.7119446545. The cubic root of 12220002 is about 230.3334922692. Note that the first 3 decimals are identical.

Adding to 12220002 its reverse (20002221), we get a palindrome (32222223).

The spelling of 12220002 in words is "twelve million, two hundred twenty thousand, two".