12211112011 has 16 divisors (see below), whose sum is σ = 14158563264. Its totient is φ = 10314653184.

The previous prime is 12211111937. The next prime is 12211112021. The reversal of 12211112011 is 11021111221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12211112011 - 2¹³ = 12211103819 is a prime.

It is a super-2 number, since 2×12211112011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211111982 and 12211112000.

It is not an unprimeable number, because it can be changed into a prime (12211112021) 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 15 ways as a sum of consecutive naturals, for example, 643191 + ... + 661903.

It is an arithmetic number, because the mean of its divisors is an integer number (884910204).

Almost surely, 2^12211112011 is an apocalyptic number.

12211112011 is a deficient number, since it is larger than the sum of its proper divisors (1947451253).

12211112011 is a wasteful number, since it uses less digits than its factorization.

12211112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20070.

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

Adding to 12211112011 its reverse (11021111221), we get a palindrome (23232223232).

The spelling of 12211112011 in words is "twelve billion, two hundred eleven million, one hundred twelve thousand, eleven".