21403340030 has 16 divisors (see below), whose sum is σ = 38923189200. Its totient is φ = 8473074432.

The previous prime is 21403340009. The next prime is 21403340033. The reversal of 21403340030 is 3004330412.

It is a junction number, because it is equal to n+sod(n) for n = 21403339984 and 21403340011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403340033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11031680 + ... + 11033619.

It is an arithmetic number, because the mean of its divisors is an integer number (2432699325).

Almost surely, 2^21403340030 is an apocalyptic number.

21403340030 is a deficient number, since it is larger than the sum of its proper divisors (17519849170).

21403340030 is a wasteful number, since it uses less digits than its factorization.

21403340030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22065403.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21403340030 its reverse (3004330412), we get a palindrome (24407670442).

The spelling of 21403340030 in words is "twenty-one billion, four hundred three million, three hundred forty thousand, thirty".