7220371 has 2 divisors, whose sum is σ = 7220372. Its totient is φ = 7220370.

The previous prime is 7220347. The next prime is 7220377. The reversal of 7220371 is 1730227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7220371 - 2⁹ = 7219859 is a prime.

7220371 is a lucky number.

It is equal to p₄₉₀₆₀₃ and since 7220371 and 490603 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (7220377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610185 + 3610186.

It is an arithmetic number, because the mean of its divisors is an integer number (3610186).

Almost surely, 2^7220371 is an apocalyptic number.

7220371 is a deficient number, since it is larger than the sum of its proper divisors (1).

7220371 is an equidigital number, since it uses as much as digits as its factorization.

7220371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 7220371 is about 2687.0748035736. The cubic root of 7220371 is about 193.2798164067.

Adding to 7220371 its reverse (1730227), we get a palindrome (8950598).

The spelling of 7220371 in words is "seven million, two hundred twenty thousand, three hundred seventy-one".