12211201110121 has 8 divisors (see below), whose sum is σ = 13603990627080. Its totient is φ = 10883192500992.

The previous prime is 12211201110109. The next prime is 12211201110139. The reversal of 12211201110121 is 12101110211221.

It can be written as a sum of positive squares in 4 ways, for example, as 1030202670121 + 11180998440000 = 1014989^2 + 3343800^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12211201110121 - 2¹³ = 12211201101929 is a prime.

It is a super-2 number, since 2×12211201110121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211201110095 and 12211201110104.

It is not an unprimeable number, because it can be changed into a prime (12211201117121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16195226560 + ... + 16195227313.

It is an arithmetic number, because the mean of its divisors is an integer number (1700498828385).

Almost surely, 2^{12211201110121} is an apocalyptic number.

It is an amenable number.

12211201110121 is a deficient number, since it is larger than the sum of its proper divisors (1392789516959).

12211201110121 is a wasteful number, since it uses less digits than its factorization.

12211201110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32390453915.

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

Adding to 12211201110121 its reverse (12101110211221), we get a palindrome (24312311321342).

The spelling of 12211201110121 in words is "twelve trillion, two hundred eleven billion, two hundred one million, one hundred ten thousand, one hundred twenty-one".