227221219 has 2 divisors, whose sum is σ = 227221220. Its totient is φ = 227221218.

The previous prime is 227221151. The next prime is 227221231. The reversal of 227221219 is 912122722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 227221219 - 2¹⁹ = 226696931 is a prime.

It is a super-2 number, since 2×227221219² = 103258964727691922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (227221249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113610609 + 113610610.

It is an arithmetic number, because the mean of its divisors is an integer number (113610610).

Almost surely, 2^227221219 is an apocalyptic number.

227221219 is a deficient number, since it is larger than the sum of its proper divisors (1).

227221219 is an equidigital number, since it uses as much as digits as its factorization.

227221219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 227221219 is about 15073.8587959421. The cubic root of 227221219 is about 610.2151162830.

The spelling of 227221219 in words is "two hundred twenty-seven million, two hundred twenty-one thousand, two hundred nineteen".