12211100012011 has 4 divisors (see below), whose sum is σ = 12211460712792. Its totient is φ = 12210739311232.

The previous prime is 12211100011987. The next prime is 12211100012039. The reversal of 12211100012011 is 11021000111221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12211100012011 - 2¹⁷ = 12211099880939 is a prime.

It is a super-2 number, since 2×12211100012011² (a number of 27 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 = 12211100011982 and 12211100012000.

It is not an unprimeable number, because it can be changed into a prime (12211103012011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180299605 + ... + 180367318.

It is an arithmetic number, because the mean of its divisors is an integer number (3052865178198).

Almost surely, 2^{12211100012011} is an apocalyptic number.

12211100012011 is a deficient number, since it is larger than the sum of its proper divisors (360700781).

12211100012011 is an equidigital number, since it uses as much as digits as its factorization.

12211100012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360700780.

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

Adding to 12211100012011 its reverse (11021000111221), we get a palindrome (23232100123232).

The spelling of 12211100012011 in words is "twelve trillion, two hundred eleven billion, one hundred million, twelve thousand, eleven".