12122210222 has 4 divisors (see below), whose sum is σ = 18183315336. Its totient is φ = 6061105110.

The previous prime is 12122210153. The next prime is 12122210339. The reversal of 12122210222 is 22201222121.

It is a happy number.

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

It is a super-2 number, since 2×12122210222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12122210222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030552554 + ... + 3030552557.

It is an arithmetic number, because the mean of its divisors is an integer number (4545828834).

Almost surely, 2^12122210222 is an apocalyptic number.

12122210222 is a deficient number, since it is larger than the sum of its proper divisors (6061105114).

12122210222 is an equidigital number, since it uses as much as digits as its factorization.

12122210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061105113.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12122210222 its reverse (22201222121), we get a palindrome (34323432343).

The spelling of 12122210222 in words is "twelve billion, one hundred twenty-two million, two hundred ten thousand, two hundred twenty-two".