21313120332213 has 80 divisors (see below), whose sum is σ = 33319022239360. Its totient is φ = 13564883666304.

The previous prime is 21313120332199. The next prime is 21313120332233. The reversal of 21313120332213 is 31223302131312.

21313120332213 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 312 + 0 + 332 + 2 + 13 = 666.

It is not a de Polignac number, because 21313120332213 - 2²⁰ = 21313119283637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313120332233) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 33330606 + ... + 33964032.

It is an arithmetic number, because the mean of its divisors is an integer number (416487777992).

Almost surely, 2^{21313120332213} is an apocalyptic number.

It is an amenable number.

21313120332213 is a deficient number, since it is larger than the sum of its proper divisors (12005901907147).

21313120332213 is a wasteful number, since it uses less digits than its factorization.

21313120332213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633688 (or 633679 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21313120332213 its reverse (31223302131312), we get a palindrome (52536422463525).

The spelling of 21313120332213 in words is "twenty-one trillion, three hundred thirteen billion, one hundred twenty million, three hundred thirty-two thousand, two hundred thirteen".