12211121212201 has 8 divisors (see below), whose sum is σ = 12527983971360. Its totient is φ = 11897921606592.

The previous prime is 12211121212193. The next prime is 12211121212207. The reversal of 12211121212201 is 10221212111221.

It is a happy number.

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 12211121212201 - 2³ = 12211121212193 is a prime.

It is a super-2 number, since 2×12211121212201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211121212207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915781635 + ... + 915794968.

It is an arithmetic number, because the mean of its divisors is an integer number (1565997996420).

Almost surely, 2^{12211121212201} is an apocalyptic number.

It is an amenable number.

12211121212201 is a deficient number, since it is larger than the sum of its proper divisors (316862759159).

12211121212201 is a wasteful number, since it uses less digits than its factorization.

12211121212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831576775.

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

Adding to 12211121212201 its reverse (10221212111221), we get a palindrome (22432333323422).

The spelling of 12211121212201 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twelve thousand, two hundred one".