222131417 has 2 divisors, whose sum is σ = 222131418. Its totient is φ = 222131416.

The previous prime is 222131369. The next prime is 222131431. The reversal of 222131417 is 714131222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174741961 + 47389456 = 13219^2 + 6884^2 .

It is a cyclic number.

It is not a de Polignac number, because 222131417 - 2¹⁸ = 221869273 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222131392 and 222131401.

It is not a weakly prime, because it can be changed into another prime (222131477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111065708 + 111065709.

It is an arithmetic number, because the mean of its divisors is an integer number (111065709).

Almost surely, 2^222131417 is an apocalyptic number.

It is an amenable number.

222131417 is a deficient number, since it is larger than the sum of its proper divisors (1).

222131417 is an equidigital number, since it uses as much as digits as its factorization.

222131417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 222131417 is about 14904.0738390549. The cubic root of 222131417 is about 605.6243510178.

Adding to 222131417 its reverse (714131222), we get a palindrome (936262639).

The spelling of 222131417 in words is "two hundred twenty-two million, one hundred thirty-one thousand, four hundred seventeen".