21301300203221 has 8 divisors (see below), whose sum is σ = 22554358248384. Its totient is φ = 20048246645440.

The previous prime is 21301300203167. The next prime is 21301300203241. The reversal of 21301300203221 is 12230200310312.

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 21301300203221 - 2²⁶ = 21301233094357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21301300203193 and 21301300203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301300203241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17212406 + ... + 18408408.

It is an arithmetic number, because the mean of its divisors is an integer number (2819294781048).

Almost surely, 2^{21301300203221} is an apocalyptic number.

It is an amenable number.

21301300203221 is a deficient number, since it is larger than the sum of its proper divisors (1253058045163).

21301300203221 is a wasteful number, since it uses less digits than its factorization.

21301300203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243691.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21301300203221 its reverse (12230200310312), we get a palindrome (33531500513533).

The spelling of 21301300203221 in words is "twenty-one trillion, three hundred one billion, three hundred million, two hundred three thousand, two hundred twenty-one".