12420044033 has 4 divisors (see below), whose sum is σ = 12543014868. Its totient is φ = 12297073200.

The previous prime is 12420044029. The next prime is 12420044071. The reversal of 12420044033 is 33044002421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6755524864 + 5664519169 = 82192^2 + 75263^2 .

It is not a de Polignac number, because 12420044033 - 2² = 12420044029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420044233) 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, 61485266 + ... + 61485467.

It is an arithmetic number, because the mean of its divisors is an integer number (3135753717).

Almost surely, 2^12420044033 is an apocalyptic number.

It is an amenable number.

12420044033 is a deficient number, since it is larger than the sum of its proper divisors (122970835).

12420044033 is a wasteful number, since it uses less digits than its factorization.

12420044033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122970834.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 12420044033 its reverse (33044002421), we get a palindrome (45464046454).

The spelling of 12420044033 in words is "twelve billion, four hundred twenty million, forty-four thousand, thirty-three".