12111388046 has 4 divisors (see below), whose sum is σ = 18167082072. Its totient is φ = 6055694022.

The previous prime is 12111388031. The next prime is 12111388057. The reversal of 12111388046 is 64088311121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64088311121 = 32213 ⋅1989517.

It is a junction number, because it is equal to n+sod(n) for n = 12111387997 and 12111388015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3027847010 + ... + 3027847013.

It is an arithmetic number, because the mean of its divisors is an integer number (4541770518).

Almost surely, 2^12111388046 is an apocalyptic number.

12111388046 is a deficient number, since it is larger than the sum of its proper divisors (6055694026).

12111388046 is an equidigital number, since it uses as much as digits as its factorization.

12111388046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055694025.

The product of its (nonzero) digits is 9216, while the sum is 35.

Adding to 12111388046 its reverse (64088311121), we get a palindrome (76199699167).

The spelling of 12111388046 in words is "twelve billion, one hundred eleven million, three hundred eighty-eight thousand, forty-six".