21300080215 has 32 divisors (see below), whose sum is σ = 27539676864. Its totient is φ = 15756871680.

The previous prime is 21300080213. The next prime is 21300080227. The reversal of 21300080215 is 51208000312.

It is not a de Polignac number, because 21300080215 - 2¹ = 21300080213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300080213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2256205 + ... + 2265625.

It is an arithmetic number, because the mean of its divisors is an integer number (860614902).

Almost surely, 2^21300080215 is an apocalyptic number.

21300080215 is a deficient number, since it is larger than the sum of its proper divisors (6239596649).

21300080215 is a wasteful number, since it uses less digits than its factorization.

21300080215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21300080215 its reverse (51208000312), we get a palindrome (72508080527).

The spelling of 21300080215 in words is "twenty-one billion, three hundred million, eighty thousand, two hundred fifteen".