12210122121101 has 4 divisors (see below), whose sum is σ = 12210217911612. Its totient is φ = 12210026330592.

The previous prime is 12210122121089. The next prime is 12210122121143. The reversal of 12210122121101 is 10112122101221.

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 9538826073001 + 2671296048100 = 3088499^2 + 1634410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210122121101 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 12210122121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210122121151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47703800 + ... + 47959073.

It is an arithmetic number, because the mean of its divisors is an integer number (3052554477903).

Almost surely, 2^{12210122121101} is an apocalyptic number.

It is an amenable number.

12210122121101 is a deficient number, since it is larger than the sum of its proper divisors (95790511).

12210122121101 is an equidigital number, since it uses as much as digits as its factorization.

12210122121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95790510.

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

Adding to 12210122121101 its reverse (10112122101221), we get a palindrome (22322244222322).

The spelling of 12210122121101 in words is "twelve trillion, two hundred ten billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred one".