7106220221 has 8 divisors (see below), whose sum is σ = 7142221440. Its totient is φ = 7070271712.

The previous prime is 7106220161. The next prime is 7106220271. The reversal of 7106220221 is 1220226017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7106220221 - 2⁶ = 7106220157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7106220271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272666 + ... + 297588.

It is an arithmetic number, because the mean of its divisors is an integer number (892777680).

Almost surely, 2^7106220221 is an apocalyptic number.

It is an amenable number.

7106220221 is a deficient number, since it is larger than the sum of its proper divisors (36001219).

7106220221 is a wasteful number, since it uses less digits than its factorization.

7106220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26355.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 7106220221 is about 84298.3998721209. The cubic root of 7106220221 is about 1922.5584582043.

Adding to 7106220221 its reverse (1220226017), we get a palindrome (8326446238).

The spelling of 7106220221 in words is "seven billion, one hundred six million, two hundred twenty thousand, two hundred twenty-one".