21024324403 has 8 divisors (see below), whose sum is σ = 22646117376. Its totient is φ = 19461505800.

The previous prime is 21024324401. The next prime is 21024324463. The reversal of 21024324403 is 30442342012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21024324403 - 2¹ = 21024324401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21024324401) 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 7 ways as a sum of consecutive naturals, for example, 14742853 + ... + 14744278.

It is an arithmetic number, because the mean of its divisors is an integer number (2830764672).

Almost surely, 2^21024324403 is an apocalyptic number.

21024324403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21024324403 is a deficient number, since it is larger than the sum of its proper divisors (1621792973).

21024324403 is a wasteful number, since it uses less digits than its factorization.

21024324403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29487185.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21024324403 its reverse (30442342012), we get a palindrome (51466666415).

The spelling of 21024324403 in words is "twenty-one billion, twenty-four million, three hundred twenty-four thousand, four hundred three".