21033141244 has 12 divisors (see below), whose sum is σ = 36815140600. Its totient is φ = 10514529648.

The previous prime is 21033141187. The next prime is 21033141247. The reversal of 21033141244 is 44214133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033141247) 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, 486939 + ... + 528370.

Almost surely, 2^21033141244 is an apocalyptic number.

It is an amenable number.

21033141244 is a deficient number, since it is larger than the sum of its proper divisors (15781999356).

21033141244 is a wasteful number, since it uses less digits than its factorization.

21033141244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020492 (or 1020490 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21033141244 its reverse (44214133012), we get a palindrome (65247274256).

The spelling of 21033141244 in words is "twenty-one billion, thirty-three million, one hundred forty-one thousand, two hundred forty-four".