21024030044 has 6 divisors (see below), whose sum is σ = 36792052584. Its totient is φ = 10512015020.

The previous prime is 21024030023. The next prime is 21024030103. The reversal of 21024030044 is 44003042012.

It is a junction number, because it is equal to n+sod(n) for n = 21024029998 and 21024030025.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2628003752 + ... + 2628003759.

It is an arithmetic number, because the mean of its divisors is an integer number (6132008764).

Almost surely, 2^21024030044 is an apocalyptic number.

It is an amenable number.

21024030044 is a deficient number, since it is larger than the sum of its proper divisors (15768022540).

21024030044 is a wasteful number, since it uses less digits than its factorization.

21024030044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5256007515 (or 5256007513 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21024030044 its reverse (44003042012), we get a palindrome (65027072056).

The spelling of 21024030044 in words is "twenty-one billion, twenty-four million, thirty thousand, forty-four".