8051338221 has 4 divisors (see below), whose sum is σ = 10735117632. Its totient is φ = 5367558812.

The previous prime is 8051338199. The next prime is 8051338247. The reversal of 8051338221 is 1228331508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8051338221 - 2¹⁷ = 8051207149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8051338291) 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, 1341889701 + ... + 1341889706.

It is an arithmetic number, because the mean of its divisors is an integer number (2683779408).

Almost surely, 2^8051338221 is an apocalyptic number.

It is an amenable number.

8051338221 is a deficient number, since it is larger than the sum of its proper divisors (2683779411).

8051338221 is a wasteful number, since it uses less digits than its factorization.

8051338221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683779410.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 8051338221 is about 89729.2495287908. The cubic root of 8051338221 is about 2004.2690661369.

Adding to 8051338221 its reverse (1228331508), we get a palindrome (9279669729).

The spelling of 8051338221 in words is "eight billion, fifty-one million, three hundred thirty-eight thousand, two hundred twenty-one".