12201222011111 has 24 divisors (see below), whose sum is σ = 14258020780080. Its totient is φ = 10410559229952.

The previous prime is 12201222011101. The next prime is 12201222011129. The reversal of 12201222011111 is 11111022210221.

It is not a de Polignac number, because 12201222011111 - 2²⁶ = 12201154902247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12201222011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201222011101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11040701 + ... + 12095433.

It is an arithmetic number, because the mean of its divisors is an integer number (594084199170).

Almost surely, 2^{12201222011111} is an apocalyptic number.

12201222011111 is a deficient number, since it is larger than the sum of its proper divisors (2056798768969).

12201222011111 is a wasteful number, since it uses less digits than its factorization.

12201222011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055823 (or 1055816 counting only the distinct ones).

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

Adding to 12201222011111 its reverse (11111022210221), we get a palindrome (23312244221332).

The spelling of 12201222011111 in words is "twelve trillion, two hundred one billion, two hundred twenty-two million, eleven thousand, one hundred eleven".