12221221110011 has 4 divisors (see below), whose sum is σ = 12222320844072. Its totient is φ = 12220121375952.

The previous prime is 12221221110001. The next prime is 12221221110061. The reversal of 12221221110011 is 11001112212221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221221110011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221221110001) 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, 549850361 + ... + 549872586.

It is an arithmetic number, because the mean of its divisors is an integer number (3055580211018).

Almost surely, 2^{12221221110011} is an apocalyptic number.

12221221110011 is a deficient number, since it is larger than the sum of its proper divisors (1099734061).

12221221110011 is a wasteful number, since it uses less digits than its factorization.

12221221110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099734060.

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

Adding to 12221221110011 its reverse (11001112212221), we get a palindrome (23222333322232).

The spelling of 12221221110011 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred ten thousand, eleven".