12211211011 has 2 divisors, whose sum is σ = 12211211012. Its totient is φ = 12211211010.

The previous prime is 12211211009. The next prime is 12211211017. The reversal of 12211211011 is 11011211221.

It is a happy number.

12211211011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211211011 - 2¹ = 12211211009 is a prime.

It is a super-2 number, since 2×12211211011² (a number of 21 digits) contains 22 as substring.

Together with 12211211009, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12211210982 and 12211211000.

It is not a weakly prime, because it can be changed into another prime (12211211017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105605505 + 6105605506.

It is an arithmetic number, because the mean of its divisors is an integer number (6105605506).

Almost surely, 2^12211211011 is an apocalyptic number.

12211211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211211011 is an equidigital number, since it uses as much as digits as its factorization.

12211211011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12211211011 its reverse (11011211221), we get a palindrome (23222422232).

The spelling of 12211211011 in words is "twelve billion, two hundred eleven million, two hundred eleven thousand, eleven".