21303033113 has 32 divisors (see below), whose sum is σ = 23097830400. Its totient is φ = 19599630336.

The previous prime is 21303033091. The next prime is 21303033131. The reversal of 21303033113 is 31133030312.

It is a cyclic number.

It is not a de Polignac number, because 21303033113 - 2²⁶ = 21235924249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21303033163) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 15118553 + ... + 15119961.

It is an arithmetic number, because the mean of its divisors is an integer number (721807200).

Almost surely, 2^21303033113 is an apocalyptic number.

21303033113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21303033113 is a deficient number, since it is larger than the sum of its proper divisors (1794797287).

21303033113 is a wasteful number, since it uses less digits than its factorization.

21303033113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 21303033113 its reverse (31133030312), we get a palindrome (52436063425).

The spelling of 21303033113 in words is "twenty-one billion, three hundred three million, thirty-three thousand, one hundred thirteen".