12118213345 has 16 divisors (see below), whose sum is σ = 17005760640. Its totient is φ = 8116383744.

The previous prime is 12118213337. The next prime is 12118213351. The reversal of 12118213345 is 54331281121.

It is not a de Polignac number, because 12118213345 - 2³ = 12118213337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4024480 + ... + 4027489.

It is an arithmetic number, because the mean of its divisors is an integer number (1062860040).

Almost surely, 2^12118213345 is an apocalyptic number.

It is an amenable number.

12118213345 is a deficient number, since it is larger than the sum of its proper divisors (4887547295).

12118213345 is an equidigital number, since it uses as much as digits as its factorization.

12118213345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052024.

The product of its digits is 5760, while the sum is 31.

Adding to 12118213345 its reverse (54331281121), we get a palindrome (66449494466).

The spelling of 12118213345 in words is "twelve billion, one hundred eighteen million, two hundred thirteen thousand, three hundred forty-five".