12440421333 has 6 divisors (see below), whose sum is σ = 17969497494. Its totient is φ = 8293614216.

The previous prime is 12440421319. The next prime is 12440421349. The reversal of 12440421333 is 33312404421.

12440421333 is a `hidden beast` number, since 1 + 2 + 440 + 4 + 213 + 3 + 3 = 666.

12440421333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7986460689 + 4453960644 = 89367^2 + 66738^2 .

It is not a de Polignac number, because 12440421333 - 2⁹ = 12440420821 is a prime.

It is a super-2 number, since 2×12440421333² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12440421297 and 12440421306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440426333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 691134510 + ... + 691134527.

It is an arithmetic number, because the mean of its divisors is an integer number (2994916249).

Almost surely, 2^12440421333 is an apocalyptic number.

It is an amenable number.

12440421333 is a deficient number, since it is larger than the sum of its proper divisors (5529076161).

12440421333 is a wasteful number, since it uses less digits than its factorization.

12440421333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382269043 (or 1382269040 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12440421333 its reverse (33312404421), we get a palindrome (45752825754).

The spelling of 12440421333 in words is "twelve billion, four hundred forty million, four hundred twenty-one thousand, three hundred thirty-three".