12201122001121 has 4 divisors (see below), whose sum is σ = 12401140394644. Its totient is φ = 12001103607600.

The previous prime is 12201122001073. The next prime is 12201122001127. The reversal of 12201122001121 is 12110022110221.

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 552286785600 + 11648835215521 = 743160^2 + 3413039^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201122001121 - 2⁷ = 12201122000993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201122001095 and 12201122001104.

It is not an unprimeable number, because it can be changed into a prime (12201122001127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100009196670 + ... + 100009196791.

It is an arithmetic number, because the mean of its divisors is an integer number (3100285098661).

Almost surely, 2^{12201122001121} is an apocalyptic number.

It is an amenable number.

12201122001121 is a deficient number, since it is larger than the sum of its proper divisors (200018393523).

12201122001121 is an equidigital number, since it uses as much as digits as its factorization.

12201122001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200018393522.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12201122001121 its reverse (12110022110221), we get a palindrome (24311144111342).

The spelling of 12201122001121 in words is "twelve trillion, two hundred one billion, one hundred twenty-two million, one thousand, one hundred twenty-one".