12400144333 has 4 divisors (see below), whose sum is σ = 12403093248. Its totient is φ = 12397195420.

The previous prime is 12400144319. The next prime is 12400144349. The reversal of 12400144333 is 33344100421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33344100421 = 197 ⋅169259393.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12400144333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12400144298 and 12400144307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400144303) 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, 1468141 + ... + 1476562.

It is an arithmetic number, because the mean of its divisors is an integer number (3100773312).

Almost surely, 2^12400144333 is an apocalyptic number.

It is an amenable number.

12400144333 is a deficient number, since it is larger than the sum of its proper divisors (2948915).

12400144333 is an equidigital number, since it uses as much as digits as its factorization.

12400144333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948914.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 12400144333 its reverse (33344100421), we get a palindrome (45744244754).

The spelling of 12400144333 in words is "twelve billion, four hundred million, one hundred forty-four thousand, three hundred thirty-three".