12101201111 has 4 divisors (see below), whose sum is σ = 12193576824. Its totient is φ = 12008825400.

The previous prime is 12101201087. The next prime is 12101201131. The reversal of 12101201111 is 11110210121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11110210121 = 1613 ⋅6887917.

It is a cyclic number.

It is not a de Polignac number, because 12101201111 - 2¹⁰ = 12101200087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101201092 and 12101201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101201131) 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, 46187660 + ... + 46187921.

It is an arithmetic number, because the mean of its divisors is an integer number (3048394206).

Almost surely, 2^12101201111 is an apocalyptic number.

12101201111 is a deficient number, since it is larger than the sum of its proper divisors (92375713).

12101201111 is an equidigital number, since it uses as much as digits as its factorization.

12101201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92375712.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12101201111 its reverse (11110210121), we get a palindrome (23211411232).

The spelling of 12101201111 in words is "twelve billion, one hundred one million, two hundred one thousand, one hundred eleven".