21303032244430 has 64 divisors (see below), whose sum is σ = 42062090614272. Its totient is φ = 7733237022720.

The previous prime is 21303032244401. The next prime is 21303032244551. The reversal of 21303032244430 is 3444223030312.

It is a happy number.

It is a super-4 number, since 4×21303032244430⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 21303032244392 and 21303032244401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5836819 + ... + 8756398.

It is an arithmetic number, because the mean of its divisors is an integer number (657220165848).

Almost surely, 2^{21303032244430} is an apocalyptic number.

21303032244430 is a deficient number, since it is larger than the sum of its proper divisors (20759058369842).

21303032244430 is a wasteful number, since it uses less digits than its factorization.

21303032244430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14593549.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 21303032244430 its reverse (3444223030312), we get a palindrome (24747255274742).

The spelling of 21303032244430 in words is "twenty-one trillion, three hundred three billion, thirty-two million, two hundred forty-four thousand, four hundred thirty".