7221822106 has 4 divisors (see below), whose sum is σ = 10832733162. Its totient is φ = 3610911052.

The previous prime is 7221822077. The next prime is 7221822151. The reversal of 7221822106 is 6012281227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6012281227 = 4751 ⋅1265477.

It can be written as a sum of positive squares in only one way, i.e., 5448654225 + 1773167881 = 73815^2 + 42109^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805455525 + ... + 1805455528.

Almost surely, 2^7221822106 is an apocalyptic number.

7221822106 is a deficient number, since it is larger than the sum of its proper divisors (3610911056).

7221822106 is a wasteful number, since it uses less digits than its factorization.

7221822106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610911055.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 7221822106 is about 84981.3044498612. The cubic root of 7221822106 is about 1932.9276360449.

The spelling of 7221822106 in words is "seven billion, two hundred twenty-one million, eight hundred twenty-two thousand, one hundred six".