222144347 has 2 divisors, whose sum is σ = 222144348. Its totient is φ = 222144346.

The previous prime is 222144343. The next prime is 222144367. The reversal of 222144347 is 743441222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222144347 - 2² = 222144343 is a prime.

It is a super-2 number, since 2×222144347² = 98696221808112818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222144341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111072173 + 111072174.

It is an arithmetic number, because the mean of its divisors is an integer number (111072174).

Almost surely, 2^222144347 is an apocalyptic number.

222144347 is a deficient number, since it is larger than the sum of its proper divisors (1).

222144347 is an equidigital number, since it uses as much as digits as its factorization.

222144347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 29.

The square root of 222144347 is about 14904.5076067611. The cubic root of 222144347 is about 605.6361016758.

Adding to 222144347 its reverse (743441222), we get a palindrome (965585569).

The spelling of 222144347 in words is "two hundred twenty-two million, one hundred forty-four thousand, three hundred forty-seven".