7006313221 has 4 divisors (see below), whose sum is σ = 7006752844. Its totient is φ = 7005873600.

The previous prime is 7006313177. The next prime is 7006313311. The reversal of 7006313221 is 1223136007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1223136007 = 271 ⋅4513417.

It can be written as a sum of positive squares in 2 ways, for example, as 1439064225 + 5567248996 = 37935^2 + 74614^2 .

It is a cyclic number.

It is not a de Polignac number, because 7006313221 - 2¹⁵ = 7006280453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7006313021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194970 + ... + 228091.

It is an arithmetic number, because the mean of its divisors is an integer number (1751688211).

Almost surely, 2^7006313221 is an apocalyptic number.

It is an amenable number.

7006313221 is a deficient number, since it is larger than the sum of its proper divisors (439623).

7006313221 is a wasteful number, since it uses less digits than its factorization.

7006313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439622.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 7006313221 is about 83703.7228622479. The cubic root of 7006313221 is about 1913.5060936535.

Adding to 7006313221 its reverse (1223136007), we get a palindrome (8229449228).

The spelling of 7006313221 in words is "seven billion, six million, three hundred thirteen thousand, two hundred twenty-one".