21303013030 has 16 divisors (see below), whose sum is σ = 41295071664. Its totient is φ = 7865727840.

The previous prime is 21303012967. The next prime is 21303013051. The reversal of 21303013030 is 3031030312.

It is a junction number, because it is equal to n+sod(n) for n = 21303012995 and 21303013013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81934536 + ... + 81934795.

It is an arithmetic number, because the mean of its divisors is an integer number (2580941979).

Almost surely, 2^21303013030 is an apocalyptic number.

21303013030 is a deficient number, since it is larger than the sum of its proper divisors (19992058634).

21303013030 is a wasteful number, since it uses less digits than its factorization.

21303013030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163869351.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21303013030 its reverse (3031030312), we get a palindrome (24334043342).

The spelling of 21303013030 in words is "twenty-one billion, three hundred three million, thirteen thousand, thirty".