12212112011201 has 4 divisors (see below), whose sum is σ = 12212121600000. Its totient is φ = 12212102422404.

The previous prime is 12212112011191. The next prime is 12212112011261. The reversal of 12212112011201 is 10211021121221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12212112011201 - 2³⁰ = 12211038269377 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 12212112011201.

It is not an unprimeable number, because it can be changed into a prime (12212112011261) 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 3 ways as a sum of consecutive naturals, for example, 2526401 + ... + 5550398.

It is an arithmetic number, because the mean of its divisors is an integer number (3053030400000).

Almost surely, 2^{12212112011201} is an apocalyptic number.

It is an amenable number.

12212112011201 is a deficient number, since it is larger than the sum of its proper divisors (9588799).

12212112011201 is an equidigital number, since it uses as much as digits as its factorization.

12212112011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9588798.

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

Adding to 12212112011201 its reverse (10211021121221), we get a palindrome (22423133132422).

The spelling of 12212112011201 in words is "twelve trillion, two hundred twelve billion, one hundred twelve million, eleven thousand, two hundred one".