12042744011 has 4 divisors (see below), whose sum is σ = 12066686352. Its totient is φ = 12018801672.

The previous prime is 12042743987. The next prime is 12042744037. The reversal of 12042744011 is 11044724021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11044724021 = 43 ⋅256854047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12042744011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12042744071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11970416 + ... + 11971421.

It is an arithmetic number, because the mean of its divisors is an integer number (3016671588).

Almost surely, 2^12042744011 is an apocalyptic number.

12042744011 is a deficient number, since it is larger than the sum of its proper divisors (23942341).

12042744011 is an equidigital number, since it uses as much as digits as its factorization.

12042744011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23942340.

The product of its (nonzero) digits is 1792, while the sum is 26.

The spelling of 12042744011 in words is "twelve billion, forty-two million, seven hundred forty-four thousand, eleven".