12211220313321 has 16 divisors (see below), whose sum is σ = 16558913310720. Its totient is φ = 8002192536720.

The previous prime is 12211220313241. The next prime is 12211220313361. The reversal of 12211220313321 is 12331302211221.

It is not a de Polignac number, because 12211220313321 - 2¹⁹ = 12211219789033 is a prime.

It is a super-2 number, since 2×12211220313321² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211220313291 and 12211220313300.

It is not an unprimeable number, because it can be changed into a prime (12211220313361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542725 + ... + 4971618.

It is an arithmetic number, because the mean of its divisors is an integer number (1034932081920).

Almost surely, 2^{12211220313321} is an apocalyptic number.

It is an amenable number.

12211220313321 is a deficient number, since it is larger than the sum of its proper divisors (4347692997399).

12211220313321 is a wasteful number, since it uses less digits than its factorization.

12211220313321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526916.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 12211220313321 its reverse (12331302211221), we get a palindrome (24542522524542).

The spelling of 12211220313321 in words is "twelve trillion, two hundred eleven billion, two hundred twenty million, three hundred thirteen thousand, three hundred twenty-one".