12120201112111 has 4 divisors (see below), whose sum is σ = 12415815773424. Its totient is φ = 11824586450800.

The previous prime is 12120201112099. The next prime is 12120201112127. The reversal of 12120201112111 is 11121110202121.

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 12120201112111 - 2¹¹ = 12120201110063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120201112511) 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, 147807330595 + ... + 147807330676.

It is an arithmetic number, because the mean of its divisors is an integer number (3103953943356).

Almost surely, 2^{12120201112111} is an apocalyptic number.

12120201112111 is a deficient number, since it is larger than the sum of its proper divisors (295614661313).

12120201112111 is an equidigital number, since it uses as much as digits as its factorization.

12120201112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295614661312.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12120201112111 its reverse (11121110202121), we get a palindrome (23241311314232).

The spelling of 12120201112111 in words is "twelve trillion, one hundred twenty billion, two hundred one million, one hundred twelve thousand, one hundred eleven".