221225319 has 12 divisors (see below), whose sum is σ = 365197456. Its totient is φ = 126414432.

The previous prime is 221225317. The next prime is 221225351. The reversal of 221225319 is 913522122.

It is a happy number.

221225319 is a `hidden beast` number, since 2 + 2 + 122 + 531 + 9 = 666.

It is not a de Polignac number, because 221225319 - 2¹ = 221225317 is a prime.

It is a super-2 number, since 2×221225319² = 97881283533303522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221225292 and 221225301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221225317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1755694 + ... + 1755819.

Almost surely, 2^221225319 is an apocalyptic number.

221225319 is a deficient number, since it is larger than the sum of its proper divisors (143972137).

221225319 is a wasteful number, since it uses less digits than its factorization.

221225319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511526 (or 3511523 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 221225319 is about 14873.6451147659. The cubic root of 221225319 is about 604.7997597919.

The spelling of 221225319 in words is "two hundred twenty-one million, two hundred twenty-five thousand, three hundred nineteen".