2213321021321 has 2 divisors, whose sum is σ = 2213321021322. Its totient is φ = 2213321021320.

The previous prime is 2213321021299. The next prime is 2213321021377. The reversal of 2213321021321 is 1231201233122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1939713565696 + 273607455625 = 1392736^2 + 523075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213321021321 - 2²² = 2213316827017 is a prime.

It is not a weakly prime, because it can be changed into another prime (2213321021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106660510660 + 1106660510661.

It is an arithmetic number, because the mean of its divisors is an integer number (1106660510661).

Almost surely, 2^{2213321021321} is an apocalyptic number.

It is an amenable number.

2213321021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213321021321 is an equidigital number, since it uses as much as digits as its factorization.

2213321021321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2213321021321 its reverse (1231201233122), we get a palindrome (3444522254443).

The spelling of 2213321021321 in words is "two trillion, two hundred thirteen billion, three hundred twenty-one million, twenty-one thousand, three hundred twenty-one".