12211111011 has 8 divisors (see below), whose sum is σ = 17761616064. Its totient is φ = 7400673320.

The previous prime is 12211110979. The next prime is 12211111021. The reversal of 12211111011 is 11011111221.

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 12211111011 - 2⁵ = 12211110979 is a prime.

It is a super-2 number, since 2×12211111011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185016801 + ... + 185016866.

It is an arithmetic number, because the mean of its divisors is an integer number (2220202008).

Almost surely, 2^12211111011 is an apocalyptic number.

12211111011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12211111011 is a deficient number, since it is larger than the sum of its proper divisors (5550505053).

12211111011 is a wasteful number, since it uses less digits than its factorization.

12211111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370033681.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12211111011 its reverse (11011111221), we get a palindrome (23222222232).

The spelling of 12211111011 in words is "twelve billion, two hundred eleven million, one hundred eleven thousand, eleven".