21303221130 has 40 divisors (see below), whose sum is σ = 57281996772. Its totient is φ = 5680858752.

The previous prime is 21303221129. The next prime is 21303221143. The reversal of 21303221130 is 3112230312.

21303221130 is a `hidden beast` number, since 213 + 0 + 322 + 1 + 130 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20141570241 + 1161650889 = 141921^2 + 34083^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 13149327 + ... + 13150946.

Almost surely, 2^21303221130 is an apocalyptic number.

21303221130 is an abundant number, since it is smaller than the sum of its proper divisors (35978775642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21303221130 is a wasteful number, since it uses less digits than its factorization.

21303221130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26300292 (or 26300283 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21303221130 its reverse (3112230312), we get a palindrome (24415451442).

The spelling of 21303221130 in words is "twenty-one billion, three hundred three million, two hundred twenty-one thousand, one hundred thirty".