12221012110111 has 32 divisors (see below), whose sum is σ = 14117384292480. Its totient is φ = 10362640490496.

The previous prime is 12221012110103. The next prime is 12221012110147. The reversal of 12221012110111 is 11101121012221.

It is not a de Polignac number, because 12221012110111 - 2³ = 12221012110103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221012113111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1120263325 + ... + 1120274233.

It is an arithmetic number, because the mean of its divisors is an integer number (441168259140).

Almost surely, 2^{12221012110111} is an apocalyptic number.

12221012110111 is a deficient number, since it is larger than the sum of its proper divisors (1896372182369).

12221012110111 is a wasteful number, since it uses less digits than its factorization.

12221012110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13603.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12221012110111 its reverse (11101121012221), we get a palindrome (23322133122332).

It can be divided in two parts, 12221012110 and 111, that added together give a palindrome (12221012221).

The spelling of 12221012110111 in words is "twelve trillion, two hundred twenty-one billion, twelve million, one hundred ten thousand, one hundred eleven".