12221100111111 has 16 divisors (see below), whose sum is σ = 16739130172800. Its totient is φ = 7925338483488.

The previous prime is 12221100110993. The next prime is 12221100111131. The reversal of 12221100111111 is 11111100112221.

12221100111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12221100111111 - 2⁹ = 12221100110599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221100111131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12452821 + ... + 13398318.

It is an arithmetic number, because the mean of its divisors is an integer number (1046195635800).

Almost surely, 2^{12221100111111} is an apocalyptic number.

12221100111111 is a deficient number, since it is larger than the sum of its proper divisors (4518030061689).

12221100111111 is a wasteful number, since it uses less digits than its factorization.

12221100111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25855438.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12221100111111 its reverse (11111100112221), we get a palindrome (23332200223332).

The spelling of 12221100111111 in words is "twelve trillion, two hundred twenty-one billion, one hundred million, one hundred eleven thousand, one hundred eleven".