222124247 has 2 divisors, whose sum is σ = 222124248. Its totient is φ = 222124246.

The previous prime is 222124223. The next prime is 222124291. The reversal of 222124247 is 742421222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222124247 is a prime.

It is a super-2 number, since 2×222124247² = 98678362210634018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222124447) 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, 111062123 + 111062124.

It is an arithmetic number, because the mean of its divisors is an integer number (111062124).

Almost surely, 2^222124247 is an apocalyptic number.

222124247 is a deficient number, since it is larger than the sum of its proper divisors (1).

222124247 is an equidigital number, since it uses as much as digits as its factorization.

222124247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 26.

The square root of 222124247 is about 14903.8332988530. The cubic root of 222124247 is about 605.6178347951.

Adding to 222124247 its reverse (742421222), we get a palindrome (964545469).

The spelling of 222124247 in words is "two hundred twenty-two million, one hundred twenty-four thousand, two hundred forty-seven".