12111232302111 has 4 divisors (see below), whose sum is σ = 16148309736152. Its totient is φ = 8074154868072.

The previous prime is 12111232302077. The next prime is 12111232302119. The reversal of 12111232302111 is 11120323211121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12111232302111 - 2⁶ = 12111232302047 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 (12111232302119) 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, 2018538717016 + ... + 2018538717021.

It is an arithmetic number, because the mean of its divisors is an integer number (4037077434038).

Almost surely, 2^{12111232302111} is an apocalyptic number.

12111232302111 is a deficient number, since it is larger than the sum of its proper divisors (4037077434041).

12111232302111 is an equidigital number, since it uses as much as digits as its factorization.

12111232302111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037077434040.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12111232302111 its reverse (11120323211121), we get a palindrome (23231555513232).

The spelling of 12111232302111 in words is "twelve trillion, one hundred eleven billion, two hundred thirty-two million, three hundred two thousand, one hundred eleven".