12211120221111 has 20 divisors (see below), whose sum is σ = 20847203482512. Its totient is φ = 6977782983168.

The previous prime is 12211120221089. The next prime is 12211120221137. The reversal of 12211120221111 is 11112202111221.

It is a happy number.

12211120221111 is a `hidden beast` number, since 1 + 2 + 211 + 120 + 221 + 111 = 666.

It is not a de Polignac number, because 12211120221111 - 2¹³ = 12211120212919 is a prime.

It is a super-4 number, since 4×12211120221111⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211120221151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10768183050 + ... + 10768184183.

Almost surely, 2^{12211120221111} is an apocalyptic number.

12211120221111 is a deficient number, since it is larger than the sum of its proper divisors (8636083261401).

12211120221111 is an equidigital number, since it uses as much as digits as its factorization.

12211120221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21536367252 (or 21536367243 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12211120221111 its reverse (11112202111221), we get a palindrome (23323322332332).

The spelling of 12211120221111 in words is "twelve trillion, two hundred eleven billion, one hundred twenty million, two hundred twenty-one thousand, one hundred eleven".