21002301303203 has 6 divisors (see below), whose sum is σ = 23085174159852. Its totient is φ = 19093001184620.

The previous prime is 21002301303169. The next prime is 21002301303227. The reversal of 21002301303203 is 30230310320012.

It is not a de Polignac number, because 21002301303203 - 2²⁴ = 21002284525987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002301303253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86786368901 + ... + 86786369142.

It is an arithmetic number, because the mean of its divisors is an integer number (3847529026642).

Almost surely, 2^{21002301303203} is an apocalyptic number.

21002301303203 is a deficient number, since it is larger than the sum of its proper divisors (2082872856649).

21002301303203 is a wasteful number, since it uses less digits than its factorization.

21002301303203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173572738065 (or 173572738054 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21002301303203 its reverse (30230310320012), we get a palindrome (51232611623215).

The spelling of 21002301303203 in words is "twenty-one trillion, two billion, three hundred one million, three hundred three thousand, two hundred three".