7100321 has 2 divisors, whose sum is σ = 7100322. Its totient is φ = 7100320.

The previous prime is 7100311. The next prime is 7100323. The reversal of 7100321 is 1230017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 1073296 = 2455^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 7100321 - 2¹⁸ = 6838177 is a prime.

It is a Sophie Germain prime.

Together with 7100323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7100296 and 7100305.

It is not a weakly prime, because it can be changed into another prime (7100323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3550160 + 3550161.

It is an arithmetic number, because the mean of its divisors is an integer number (3550161).

Almost surely, 2^7100321 is an apocalyptic number.

It is an amenable number.

7100321 is a deficient number, since it is larger than the sum of its proper divisors (1).

7100321 is an equidigital number, since it uses as much as digits as its factorization.

7100321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 7100321 is about 2664.6427527907. The cubic root of 7100321 is about 192.2026307650.

Adding to 7100321 its reverse (1230017), we get a palindrome (8330338).

The spelling of 7100321 in words is "seven million, one hundred thousand, three hundred twenty-one".