12042222011 has 4 divisors (see below), whose sum is σ = 12058130592. Its totient is φ = 12026313432.

The previous prime is 12042222001. The next prime is 12042222013. The reversal of 12042222011 is 11022224021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11022224021 = 557 ⋅19788553.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12042222011 is a prime.

It is a super-2 number, since 2×12042222011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12042222013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7953155 + ... + 7954668.

It is an arithmetic number, because the mean of its divisors is an integer number (3014532648).

Almost surely, 2^12042222011 is an apocalyptic number.

12042222011 is a deficient number, since it is larger than the sum of its proper divisors (15908581).

12042222011 is an equidigital number, since it uses as much as digits as its factorization.

12042222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15908580.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12042222011 its reverse (11022224021), we get a palindrome (23064446032).

The spelling of 12042222011 in words is "twelve billion, forty-two million, two hundred twenty-two thousand, eleven".