7022272421 has 2 divisors, whose sum is σ = 7022272422. Its totient is φ = 7022272420.

The previous prime is 7022272391. The next prime is 7022272447. The reversal of 7022272421 is 1242722207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3731988100 + 3290284321 = 61090^2 + 57361^2 .

It is an emirp because it is prime and its reverse (1242722207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7022272421 - 2⁶ = 7022272357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7022272721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3511136210 + 3511136211.

It is an arithmetic number, because the mean of its divisors is an integer number (3511136211).

Almost surely, 2^7022272421 is an apocalyptic number.

It is an amenable number.

7022272421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7022272421 is an equidigital number, since it uses as much as digits as its factorization.

7022272421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 7022272421 is about 83799.0001193332. Note that the first 3 decimals coincide. The cubic root of 7022272421 is about 1914.9578733061.

Adding to 7022272421 its reverse (1242722207), we get a palindrome (8264994628).

The spelling of 7022272421 in words is "seven billion, twenty-two million, two hundred seventy-two thousand, four hundred twenty-one".