21201210303330 has 32 divisors (see below), whose sum is σ = 50924038935744. Its totient is φ = 5649085613376.

The previous prime is 21201210303313. The next prime is 21201210303367. The reversal of 21201210303330 is 3330301210212.

It is a junction number, because it is equal to n+sod(n) for n = 21201210303297 and 21201210303306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285616492 + ... + 285690711.

It is an arithmetic number, because the mean of its divisors is an integer number (1591376216742).

Almost surely, 2^{21201210303330} is an apocalyptic number.

21201210303330 is an abundant number, since it is smaller than the sum of its proper divisors (29722828632414).

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

21201210303330 is a wasteful number, since it uses less digits than its factorization.

21201210303330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571308450.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21201210303330 its reverse (3330301210212), we get a palindrome (24531511513542).

The spelling of 21201210303330 in words is "twenty-one trillion, two hundred one billion, two hundred ten million, three hundred three thousand, three hundred thirty".