12211121100111 has 32 divisors (see below), whose sum is σ = 17775694073088. Its totient is φ = 7425101376000.

The previous prime is 12211121100109. The next prime is 12211121100131. The reversal of 12211121100111 is 11100112111221.

It is not a de Polignac number, because 12211121100111 - 2¹ = 12211121100109 is a prime.

It is a super-2 number, since 2×12211121100111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211121100131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12417165 + ... + 13364438.

It is an arithmetic number, because the mean of its divisors is an integer number (555490439784).

Almost surely, 2^{12211121100111} is an apocalyptic number.

12211121100111 is a deficient number, since it is larger than the sum of its proper divisors (5564572972977).

12211121100111 is a wasteful number, since it uses less digits than its factorization.

12211121100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25781911.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12211121100111 its reverse (11100112111221), we get a palindrome (23311233211332).

The spelling of 12211121100111 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, one hundred thousand, one hundred eleven".