12120211000111 has 4 divisors (see below), whose sum is σ = 12647176695792. Its totient is φ = 11593245304432.

The previous prime is 12120211000087. The next prime is 12120211000127. The reversal of 12120211000111 is 11100011202121.

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 12120211000111 - 2²⁷ = 12120076782383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120211000091 and 12120211000100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120211000151) 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, 263482847806 + ... + 263482847851.

It is an arithmetic number, because the mean of its divisors is an integer number (3161794173948).

Almost surely, 2^{12120211000111} is an apocalyptic number.

12120211000111 is a deficient number, since it is larger than the sum of its proper divisors (526965695681).

12120211000111 is an equidigital number, since it uses as much as digits as its factorization.

12120211000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526965695680.

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

Adding to 12120211000111 its reverse (11100011202121), we get a palindrome (23220222202232).

The spelling of 12120211000111 in words is "twelve trillion, one hundred twenty billion, two hundred eleven million, one hundred eleven", and thus it is an aban number.