21033352103 has 8 divisors (see below), whose sum is σ = 21333610368. Its totient is φ = 20733421824.

The previous prime is 21033352079. The next prime is 21033352129. The reversal of 21033352103 is 30125333012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21033352103 - 2²⁸ = 20764916647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033352903) by changing a digit.

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, 48650 + ... + 210792.

It is an arithmetic number, because the mean of its divisors is an integer number (2666701296).

Almost surely, 2^21033352103 is an apocalyptic number.

21033352103 is a deficient number, since it is larger than the sum of its proper divisors (300258265).

21033352103 is a wasteful number, since it uses less digits than its factorization.

21033352103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163993.

The product of its (nonzero) digits is 1620, while the sum is 23.

Adding to 21033352103 its reverse (30125333012), we get a palindrome (51158685115).

The spelling of 21033352103 in words is "twenty-one billion, thirty-three million, three hundred fifty-two thousand, one hundred three".