12211122211111 has 8 divisors (see below), whose sum is σ = 12214933526880. Its totient is φ = 12207311229312.

The previous prime is 12211122211103. The next prime is 12211122211229. The reversal of 12211122211111 is 11111222111221.

12211122211111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12211122211111 - 2³ = 12211122211103 is a prime.

It is a super-2 number, since 2×12211122211111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211122217111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86858371 + ... + 86998843.

It is an arithmetic number, because the mean of its divisors is an integer number (1526866690860).

Almost surely, 2^{12211122211111} is an apocalyptic number.

12211122211111 is a deficient number, since it is larger than the sum of its proper divisors (3811315769).

12211122211111 is a wasteful number, since it uses less digits than its factorization.

12211122211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166985.

The product of its digits is 32, while the sum is 19.

Adding to 12211122211111 its reverse (11111222111221), we get a palindrome (23322344322332).

The spelling of 12211122211111 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, one hundred eleven".