12122101211210 has 32 divisors (see below), whose sum is σ = 23183241083280. Its totient is φ = 4563614555136.

The previous prime is 12122101211203. The next prime is 12122101211219. The reversal of 12122101211210 is 1211210122121.

It can be written as a sum of positive squares in 8 ways, for example, as 3489569705521 + 8632531505689 = 1868039^2 + 2938117^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12122101211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123318479 + ... + 123416738.

Almost surely, 2^{12122101211210} is an apocalyptic number.

12122101211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122101211210 is a deficient number, since it is larger than the sum of its proper divisors (11061139872070).

12122101211210 is an equidigital number, since it uses as much as digits as its factorization.

12122101211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246735275 (or 246735241 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12122101211210 its reverse (1211210122121), we get a palindrome (13333311333331).

The spelling of 12122101211210 in words is "twelve trillion, one hundred twenty-two billion, one hundred one million, two hundred eleven thousand, two hundred ten".