21303533356030 has 16 divisors (see below), whose sum is σ = 38346456700080. Its totient is φ = 8521391862592.

The previous prime is 21303533356019. The next prime is 21303533356069. The reversal of 21303533356030 is 3065333530312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1844397 + ... + 6782983.

It is an arithmetic number, because the mean of its divisors is an integer number (2396653543755).

Almost surely, 2^{21303533356030} is an apocalyptic number.

21303533356030 is a deficient number, since it is larger than the sum of its proper divisors (17042923344050).

21303533356030 is a wasteful number, since it uses less digits than its factorization.

21303533356030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369963.

The product of its (nonzero) digits is 218700, while the sum is 37.

Adding to 21303533356030 its reverse (3065333530312), we get a palindrome (24368866886342).

The spelling of 21303533356030 in words is "twenty-one trillion, three hundred three billion, five hundred thirty-three million, three hundred fifty-six thousand, thirty".