12221012221211 has 8 divisors (see below), whose sum is σ = 12237286494000. Its totient is φ = 12204748483200.

The previous prime is 12221012221153. The next prime is 12221012221213. The reversal of 12221012221211 is 11212221012221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221012221211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221012221213) 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, 310661 + ... + 4953638.

It is an arithmetic number, because the mean of its divisors is an integer number (1529660811750).

Almost surely, 2^{12221012221211} is an apocalyptic number.

12221012221211 is a deficient number, since it is larger than the sum of its proper divisors (16274272789).

12221012221211 is a wasteful number, since it uses less digits than its factorization.

12221012221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267389.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12221012221211 its reverse (11212221012221), we get a palindrome (23433233233432).

The spelling of 12221012221211 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two hundred twenty-one thousand, two hundred eleven".