21313312230211 has 32 divisors (see below), whose sum is σ = 21927321561600. Its totient is φ = 20709536052480.

The previous prime is 21313312230191. The next prime is 21313312230239. The reversal of 21313312230211 is 11203221331312.

It is a cyclic number.

It is not a de Polignac number, because 21313312230211 - 2¹⁷ = 21313312099139 is a prime.

It is a super-2 number, since 2×21313312230211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313312230811) 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, 4976255676 + ... + 4976259958.

It is an arithmetic number, because the mean of its divisors is an integer number (685228798800).

Almost surely, 2^{21313312230211} is an apocalyptic number.

21313312230211 is a deficient number, since it is larger than the sum of its proper divisors (614009331389).

21313312230211 is a wasteful number, since it uses less digits than its factorization.

21313312230211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7419.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21313312230211 its reverse (11203221331312), we get a palindrome (32516533561523).

The spelling of 21313312230211 in words is "twenty-one trillion, three hundred thirteen billion, three hundred twelve million, two hundred thirty thousand, two hundred eleven".