12111304142 has 16 divisors (see below), whose sum is σ = 21268632672. Its totient is φ = 5063959680.

The previous prime is 12111304021. The next prime is 12111304147. The reversal of 12111304142 is 24140311121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111304147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10549343 + ... + 10550490.

It is an arithmetic number, because the mean of its divisors is an integer number (1329289542).

Almost surely, 2^12111304142 is an apocalyptic number.

12111304142 is a deficient number, since it is larger than the sum of its proper divisors (9157328530).

12111304142 is a wasteful number, since it uses less digits than its factorization.

12111304142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21099883.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12111304142 its reverse (24140311121), we get a palindrome (36251615263).

The spelling of 12111304142 in words is "twelve billion, one hundred eleven million, three hundred four thousand, one hundred forty-two".