7071333221 has 4 divisors (see below), whose sum is σ = 7082869452. Its totient is φ = 7059796992.

The previous prime is 7071333211. The next prime is 7071333251. The reversal of 7071333221 is 1223331707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1223331707 = 13 ⋅94102439.

It can be written as a sum of positive squares in 2 ways, for example, as 44702596 + 7026630625 = 6686^2 + 83825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7071333221 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 (7071333211) 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, 5767196 + ... + 5768421.

It is an arithmetic number, because the mean of its divisors is an integer number (1770717363).

Almost surely, 2^7071333221 is an apocalyptic number.

It is an amenable number.

7071333221 is a deficient number, since it is larger than the sum of its proper divisors (11536231).

7071333221 is a wasteful number, since it uses less digits than its factorization.

7071333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11536230.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 7071333221 is about 84091.2196427189. The cubic root of 7071333221 is about 1919.4071177404.

Adding to 7071333221 its reverse (1223331707), we get a palindrome (8294664928).

The spelling of 7071333221 in words is "seven billion, seventy-one million, three hundred thirty-three thousand, two hundred twenty-one".