20212213103321 has 2 divisors, whose sum is σ = 20212213103322. Its totient is φ = 20212213103320.

The previous prime is 20212213103287. The next prime is 20212213103351. The reversal of 20212213103321 is 12330131221202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18904017015625 + 1308196087696 = 4347875^2 + 1143764^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212213103321 - 2¹⁴ = 20212213086937 is a prime.

It is a super-2 number, since 2×20212213103321² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20212213103351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106106551660 + 10106106551661.

It is an arithmetic number, because the mean of its divisors is an integer number (10106106551661).

Almost surely, 2^{20212213103321} is an apocalyptic number.

It is an amenable number.

20212213103321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212213103321 is an equidigital number, since it uses as much as digits as its factorization.

20212213103321 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20212213103321 its reverse (12330131221202), we get a palindrome (32542344324523).

The spelling of 20212213103321 in words is "twenty trillion, two hundred twelve billion, two hundred thirteen million, one hundred three thousand, three hundred twenty-one".