12122102211101 has 4 divisors (see below), whose sum is σ = 12124354976604. Its totient is φ = 12119849445600.

The previous prime is 12122102211049. The next prime is 12122102211103. The reversal of 12122102211101 is 10111220122121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3267020100100 + 8855082111001 = 1807490^2 + 2975749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122102211101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122102211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122102211103) 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, 1126374680 + ... + 1126385441.

It is an arithmetic number, because the mean of its divisors is an integer number (3031088744151).

Almost surely, 2^{12122102211101} is an apocalyptic number.

It is an amenable number.

12122102211101 is a deficient number, since it is larger than the sum of its proper divisors (2252765503).

12122102211101 is an equidigital number, since it uses as much as digits as its factorization.

12122102211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252765502.

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

Adding to 12122102211101 its reverse (10111220122121), we get a palindrome (22233322333222).

The spelling of 12122102211101 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, two hundred eleven thousand, one hundred one".