21100332003 has 8 divisors (see below), whose sum is σ = 28142312016. Its totient is φ = 14062620000.

The previous prime is 21100331999. The next prime is 21100332013. The reversal of 21100332003 is 30023300112.

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

It is not a de Polignac number, because 21100332003 - 2² = 21100331999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100332013) 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 7 ways as a sum of consecutive naturals, for example, 1055448 + ... + 1075253.

It is an arithmetic number, because the mean of its divisors is an integer number (3517789002).

Almost surely, 2^21100332003 is an apocalyptic number.

21100332003 is a deficient number, since it is larger than the sum of its proper divisors (7041980013).

21100332003 is a wasteful number, since it uses less digits than its factorization.

21100332003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134005.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21100332003 its reverse (30023300112), we get a palindrome (51123632115).

The spelling of 21100332003 in words is "twenty-one billion, one hundred million, three hundred thirty-two thousand, three".