7222219 has 2 divisors, whose sum is σ = 7222220. Its totient is φ = 7222218.

The previous prime is 7222199. The next prime is 7222279. The reversal of 7222219 is 9122227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7222219 - 2⁷ = 7222091 is a prime.

It is a super-2 number, since 2×7222219² = 104320894567922, which contains 22 as substring.

It is equal to p₄₉₀₇₃₂ and since 7222219 and 490732 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 7222193 and 7222202.

It is not a weakly prime, because it can be changed into another prime (7222279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611109 + 3611110.

It is an arithmetic number, because the mean of its divisors is an integer number (3611110).

Almost surely, 2^7222219 is an apocalyptic number.

7222219 is a deficient number, since it is larger than the sum of its proper divisors (1).

7222219 is an equidigital number, since it uses as much as digits as its factorization.

7222219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 7222219 is about 2687.4186499316. The cubic root of 7222219 is about 193.2963045083.

Adding to 7222219 its product of digits (1008), we get a palindrome (7223227).

The spelling of 7222219 in words is "seven million, two hundred twenty-two thousand, two hundred nineteen".