7222030021 has 8 divisors (see below), whose sum is σ = 7284752280. Its totient is φ = 7159579392.

The previous prime is 7222030009. The next prime is 7222030027. The reversal of 7222030021 is 1200302227.

7222030021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2245432996 + 4976597025 = 47386^2 + 70545^2 .

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 7222030021 - 2⁵ = 7222029989 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 (7222030027) 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, 14320 + ... + 121033.

It is an arithmetic number, because the mean of its divisors is an integer number (910594035).

Almost surely, 2^7222030021 is an apocalyptic number.

It is an amenable number.

7222030021 is a deficient number, since it is larger than the sum of its proper divisors (62722259).

7222030021 is a wasteful number, since it uses less digits than its factorization.

7222030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135815.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 7222030021 is about 84982.5277395301. The cubic root of 7222030021 is about 1932.9461854169.

Adding to 7222030021 its reverse (1200302227), we get a palindrome (8422332248).

The spelling of 7222030021 in words is "seven billion, two hundred twenty-two million, thirty thousand, twenty-one".