12202222 has 4 divisors (see below), whose sum is σ = 18303336. Its totient is φ = 6101110.

The previous prime is 12202219. The next prime is 12202249. The reversal of 12202222 is 22220221.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

12202222 is a modest number, since divided by 2222 gives 1220 as remainder.

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, 3050554 + ... + 3050557.

It is an arithmetic number, because the mean of its divisors is an integer number (4575834).

Almost surely, 2^12202222 is an apocalyptic number.

12202222 is a deficient number, since it is larger than the sum of its proper divisors (6101114).

12202222 is an equidigital number, since it uses as much as digits as its factorization.

12202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101113.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 12202222 is about 3493.1679032076. The cubic root of 12202222 is about 230.2217269486.

Adding to 12202222 its reverse (22220221), we get a palindrome (34422443).

The spelling of 12202222 in words is "twelve million, two hundred two thousand, two hundred twenty-two".