12122102211211 has 4 divisors (see below), whose sum is σ = 12122115967624. Its totient is φ = 12122088454800.

The previous prime is 12122102211187. The next prime is 12122102211251. The reversal of 12122102211211 is 11211220122121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12122102211211 - 2¹¹ = 12122102209163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122102211251) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5458770 + ... + 7351351.

It is an arithmetic number, because the mean of its divisors is an integer number (3030528991906).

Almost surely, 2^{12122102211211} is an apocalyptic number.

12122102211211 is a deficient number, since it is larger than the sum of its proper divisors (13756413).

12122102211211 is an equidigital number, since it uses as much as digits as its factorization.

12122102211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13756412.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12122102211211 its reverse (11211220122121), we get a palindrome (23333322333332).

The spelling of 12122102211211 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, two hundred eleven thousand, two hundred eleven".