12111321254 has 48 divisors (see below), whose sum is σ = 19652109840. Its totient is φ = 5597629440.

The previous prime is 12111321241. The next prime is 12111321283. The reversal of 12111321254 is 45212311121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92452769 + ... + 92452899.

It is an arithmetic number, because the mean of its divisors is an integer number (409418955).

Almost surely, 2^12111321254 is an apocalyptic number.

12111321254 is a deficient number, since it is larger than the sum of its proper divisors (7540788586).

12111321254 is an frugal number, since it uses more digits than its factorization.

12111321254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 247 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

Adding to 12111321254 its reverse (45212311121), we get a palindrome (57323632375).

The spelling of 12111321254 in words is "twelve billion, one hundred eleven million, three hundred twenty-one thousand, two hundred fifty-four".