12102212122 has 48 divisors (see below), whose sum is σ = 24558379776. Its totient is φ = 4352436000.

The previous prime is 12102212119. The next prime is 12102212123. The reversal of 12102212122 is 22121220121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12102212096 and 12102212105.

It is not an unprimeable number, because it can be changed into a prime (12102212123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252754 + ... + 296797.

It is an arithmetic number, because the mean of its divisors is an integer number (511632912).

Almost surely, 2^12102212122 is an apocalyptic number.

12102212122 is an abundant number, since it is smaller than the sum of its proper divisors (12456167654).

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

12102212122 is a wasteful number, since it uses less digits than its factorization.

12102212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549595 (or 549584 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12102212122 its reverse (22121220121), we get a palindrome (34223432243).

The spelling of 12102212122 in words is "twelve billion, one hundred two million, two hundred twelve thousand, one hundred twenty-two".