2102231213321 has 2 divisors, whose sum is σ = 2102231213322. Its totient is φ = 2102231213320.

The previous prime is 2102231213293. The next prime is 2102231213347. The reversal of 2102231213321 is 1233121322012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2101308268921 + 922944400 = 1449589^2 + 30380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102231213321 - 2¹⁰ = 2102231212297 is a prime.

It is a super-2 number, since 2×2102231213321² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2102231213351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051115606660 + 1051115606661.

It is an arithmetic number, because the mean of its divisors is an integer number (1051115606661).

Almost surely, 2^{2102231213321} is an apocalyptic number.

It is an amenable number.

2102231213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102231213321 is an equidigital number, since it uses as much as digits as its factorization.

2102231213321 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 2102231213321 its reverse (1233121322012), we get a palindrome (3335352535333).

The spelling of 2102231213321 in words is "two trillion, one hundred two billion, two hundred thirty-one million, two hundred thirteen thousand, three hundred twenty-one".