6212311321 has 2 divisors, whose sum is σ = 6212311322. Its totient is φ = 6212311320.

The previous prime is 6212311319. The next prime is 6212311361. The reversal of 6212311321 is 1231132126.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6177960000 + 34351321 = 78600^2 + 5861^2 .

It is a cyclic number.

It is not a de Polignac number, because 6212311321 - 2¹ = 6212311319 is a prime.

Together with 6212311319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6212311292 and 6212311301.

It is not a weakly prime, because it can be changed into another prime (6212311361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3106155660 + 3106155661.

It is an arithmetic number, because the mean of its divisors is an integer number (3106155661).

Almost surely, 2^6212311321 is an apocalyptic number.

It is an amenable number.

6212311321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6212311321 is an equidigital number, since it uses as much as digits as its factorization.

6212311321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 6212311321 is about 78818.2169361880. The cubic root of 6212311321 is about 1838.3057144112.

Adding to 6212311321 its reverse (1231132126), we get a palindrome (7443443447).

The spelling of 6212311321 in words is "six billion, two hundred twelve million, three hundred eleven thousand, three hundred twenty-one".