6822221506 has 4 divisors (see below), whose sum is σ = 10233332262. Its totient is φ = 3411110752.

The previous prime is 6822221477. The next prime is 6822221509. The reversal of 6822221506 is 6051222286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6051222286 = 2 ⋅3025611143.

It can be written as a sum of positive squares in only one way, i.e., 4916113225 + 1906108281 = 70115^2 + 43659^2 .

It is not an unprimeable number, because it can be changed into a prime (6822221509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1705555375 + ... + 1705555378.

Almost surely, 2^6822221506 is an apocalyptic number.

6822221506 is a deficient number, since it is larger than the sum of its proper divisors (3411110756).

6822221506 is a wasteful number, since it uses less digits than its factorization.

6822221506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411110755.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 6822221506 is about 82596.7402867692. The cubic root of 6822221506 is about 1896.5979291862.

The spelling of 6822221506 in words is "six billion, eight hundred twenty-two million, two hundred twenty-one thousand, five hundred six".