12211112220111 has 36 divisors (see below), whose sum is σ = 21072531614472. Its totient is φ = 6789189796704.

The previous prime is 12211112220107. The next prime is 12211112220137. The reversal of 12211112220111 is 11102221111221.

It is a happy number.

12211112220111 is a `hidden beast` number, since 1 + 221 + 1 + 112 + 220 + 111 = 666.

It is not a de Polignac number, because 12211112220111 - 2² = 12211112220107 is a prime.

It is a super-2 number, since 2×12211112220111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211112220911) 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 35 ways as a sum of consecutive naturals, for example, 374167425 + ... + 374200058.

It is an arithmetic number, because the mean of its divisors is an integer number (585348100402).

Almost surely, 2^{12211112220111} is an apocalyptic number.

12211112220111 is a deficient number, since it is larger than the sum of its proper divisors (8861419394361).

12211112220111 is a wasteful number, since it uses less digits than its factorization.

12211112220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748367540 (or 748367530 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12211112220111 its reverse (11102221111221), we get a palindrome (23313333331332).

The spelling of 12211112220111 in words is "twelve trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty thousand, one hundred eleven".