12112201011111 has 4 divisors (see below), whose sum is σ = 16149601348152. Its totient is φ = 8074800674072.

The previous prime is 12112201011101. The next prime is 12112201011151. The reversal of 12112201011111 is 11111010221121.

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 12112201011111 - 2⁹ = 12112201010599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112201011101) 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, 2018700168516 + ... + 2018700168521.

It is an arithmetic number, because the mean of its divisors is an integer number (4037400337038).

Almost surely, 2^{12112201011111} is an apocalyptic number.

12112201011111 is a deficient number, since it is larger than the sum of its proper divisors (4037400337041).

12112201011111 is an equidigital number, since it uses as much as digits as its factorization.

12112201011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037400337040.

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

Adding to 12112201011111 its reverse (11111010221121), we get a palindrome (23223211232232).

The spelling of 12112201011111 in words is "twelve trillion, one hundred twelve billion, two hundred one million, eleven thousand, one hundred eleven".