7012321 has 4 divisors (see below), whose sum is σ = 7017732. Its totient is φ = 7006912.

The previous prime is 7012319. The next prime is 7012331. The reversal of 7012321 is 1232107.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1232107 = 809 ⋅1523.

It can be written as a sum of positive squares in 2 ways, for example, as 3111696 + 3900625 = 1764^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 7012321 - 2¹ = 7012319 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7012295 and 7012304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7012331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525 + ... + 3781.

It is an arithmetic number, because the mean of its divisors is an integer number (1754433).

Almost surely, 2^7012321 is an apocalyptic number.

It is an amenable number.

7012321 is a deficient number, since it is larger than the sum of its proper divisors (5411).

7012321 is a wasteful number, since it uses less digits than its factorization.

7012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 7012321 is about 2648.0787375001. The cubic root of 7012321 is about 191.4052868973.

Adding to 7012321 its reverse (1232107), we get a palindrome (8244428).

The spelling of 7012321 in words is "seven million, twelve thousand, three hundred twenty-one".