21210213320313 has 8 divisors (see below), whose sum is σ = 28937965460448. Its totient is φ = 13811301696864.

The previous prime is 21210213320287. The next prime is 21210213320333. The reversal of 21210213320313 is 31302331201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21210213320313 - 2¹⁷ = 21210213189241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210213320333) 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, 82210129020 + ... + 82210129277.

It is an arithmetic number, because the mean of its divisors is an integer number (3617245682556).

Almost surely, 2^{21210213320313} is an apocalyptic number.

It is an amenable number.

21210213320313 is a deficient number, since it is larger than the sum of its proper divisors (7727752140135).

21210213320313 is a wasteful number, since it uses less digits than its factorization.

21210213320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164420258343.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21210213320313 its reverse (31302331201212), we get a palindrome (52512544521525).

The spelling of 21210213320313 in words is "twenty-one trillion, two hundred ten billion, two hundred thirteen million, three hundred twenty thousand, three hundred thirteen".