12221102 has 4 divisors (see below), whose sum is σ = 18331656. Its totient is φ = 6110550.

The previous prime is 12221089. The next prime is 12221107. The reversal of 12221102 is 20112221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055274 + ... + 3055277.

It is an arithmetic number, because the mean of its divisors is an integer number (4582914).

Almost surely, 2^12221102 is an apocalyptic number.

12221102 is a deficient number, since it is larger than the sum of its proper divisors (6110554).

12221102 is an equidigital number, since it uses as much as digits as its factorization.

12221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110553.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12221102 is about 3495.8692767322. The cubic root of 12221102 is about 230.3404033220.

Adding to 12221102 its reverse (20112221), we get a palindrome (32333323).

The spelling of 12221102 in words is "twelve million, two hundred twenty-one thousand, one hundred two".