21303210232130 has 16 divisors (see below), whose sum is σ = 38345861030400. Its totient is φ = 8521265734512.

The previous prime is 21303210232123. The next prime is 21303210232133. The reversal of 21303210232130 is 3123201230312.

It is a junction number, because it is equal to n+sod(n) for n = 21303210232096 and 21303210232105.

It is not an unprimeable number, because it can be changed into a prime (21303210232133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207071 + ... + 7272669.

It is an arithmetic number, because the mean of its divisors is an integer number (2396616314400).

Almost surely, 2^{21303210232130} is an apocalyptic number.

21303210232130 is a deficient number, since it is larger than the sum of its proper divisors (17042650798270).

21303210232130 is a wasteful number, since it uses less digits than its factorization.

21303210232130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589593.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21303210232130 its reverse (3123201230312), we get a palindrome (24426411462442).

The spelling of 21303210232130 in words is "twenty-one trillion, three hundred three billion, two hundred ten million, two hundred thirty-two thousand, one hundred thirty".