21201310330 has 64 divisors (see below), whose sum is σ = 39830343840. Its totient is φ = 8119091200.

The previous prime is 21201310313. The next prime is 21201310363. The reversal of 21201310330 is 3301310212.

It can be written as a sum of positive squares in 16 ways, for example, as 1287302641 + 19914007689 = 35879^2 + 141117^2 .

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, 4997010 + ... + 5001250.

Almost surely, 2^21201310330 is an apocalyptic number.

21201310330 is a deficient number, since it is larger than the sum of its proper divisors (18629033510).

21201310330 is a wasteful number, since it uses less digits than its factorization.

21201310330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21201310330 its reverse (3301310212), we get a palindrome (24502620542).

The spelling of 21201310330 in words is "twenty-one billion, two hundred one million, three hundred ten thousand, three hundred thirty".