21321100200003 has 4 divisors (see below), whose sum is σ = 28428133600008. Its totient is φ = 14214066800000.

The previous prime is 21321100199941. The next prime is 21321100200097. The reversal of 21321100200003 is 30000200112312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21321100200003 - 2¹⁸ = 21321099937859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21321102200003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3553516699998 + ... + 3553516700003.

It is an arithmetic number, because the mean of its divisors is an integer number (7107033400002).

Almost surely, 2^{21321100200003} is an apocalyptic number.

21321100200003 is a deficient number, since it is larger than the sum of its proper divisors (7107033400005).

21321100200003 is an equidigital number, since it uses as much as digits as its factorization.

21321100200003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107033400004.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21321100200003 its reverse (30000200112312), we get a palindrome (51321300312315).

The spelling of 21321100200003 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred million, two hundred thousand, three".