12112211221011 has 32 divisors (see below), whose sum is σ = 19618888608000. Its totient is φ = 7324384919040.

The previous prime is 12112211220947. The next prime is 12112211221027. The reversal of 12112211221011 is 11012211221121.

It is a happy number.

12112211221011 is a `hidden beast` number, since 1 + 211 + 221 + 1 + 221 + 0 + 11 = 666.

It is not a de Polignac number, because 12112211221011 - 2⁶ = 12112211220947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12112211221081) 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, 45280741 + ... + 45547446.

It is an arithmetic number, because the mean of its divisors is an integer number (613090269000).

Almost surely, 2^{12112211221011} is an apocalyptic number.

12112211221011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12112211221011 is a deficient number, since it is larger than the sum of its proper divisors (7506677386989).

12112211221011 is a wasteful number, since it uses less digits than its factorization.

12112211221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90828656 (or 90828650 counting only the distinct ones).

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

Adding to 12112211221011 its reverse (11012211221121), we get a palindrome (23124422442132).

The spelling of 12112211221011 in words is "twelve trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, eleven".