12211122211211 has 48 divisors (see below), whose sum is σ = 15944823092448. Its totient is φ = 9243194688000.

The previous prime is 12211122211103. The next prime is 12211122211229. The reversal of 12211122211211 is 11211222111221.

It is a happy number.

12211122211211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12211122211211 - 2³⁴ = 12193942342027 is a prime.

It is a super-2 number, since 2×12211122211211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211122241211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 769151 + ... + 5001383.

It is an arithmetic number, because the mean of its divisors is an integer number (332183814426).

Almost surely, 2^{12211122211211} is an apocalyptic number.

12211122211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12211122211211 is a deficient number, since it is larger than the sum of its proper divisors (3733700881237).

12211122211211 is a wasteful number, since it uses less digits than its factorization.

12211122211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232412 (or 4232405 counting only the distinct ones).

The product of its digits is 64, while the sum is 20.

Adding to 12211122211211 its reverse (11211222111221), we get a palindrome (23422344322432).

It can be divided in two parts, 122111 and 22211211, that added together give a palindrome (22333322).

The spelling of 12211122211211 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, two hundred eleven".