21243003301 has 16 divisors (see below), whose sum is σ = 23713966080. Its totient is φ = 18896895360.

The previous prime is 21243003289. The next prime is 21243003311. The reversal of 21243003301 is 10330034212.

It is a cyclic number.

It is not a de Polignac number, because 21243003301 - 2⁵ = 21243003269 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 (21243003311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13960 + ... + 206593.

It is an arithmetic number, because the mean of its divisors is an integer number (1482122880).

Almost surely, 2^21243003301 is an apocalyptic number.

It is an amenable number.

21243003301 is a deficient number, since it is larger than the sum of its proper divisors (2470962779).

21243003301 is a wasteful number, since it uses less digits than its factorization.

21243003301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220836.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21243003301 its reverse (10330034212), we get a palindrome (31573037513).

The spelling of 21243003301 in words is "twenty-one billion, two hundred forty-three million, three thousand, three hundred one".