222261247 has 16 divisors (see below), whose sum is σ = 257608512. Its totient is φ = 189918720.

The previous prime is 222261239. The next prime is 222261251. The reversal of 222261247 is 742162222.

It is a cyclic number.

It is not a de Polignac number, because 222261247 - 2³ = 222261239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222264247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5238 + ... + 21724.

It is an arithmetic number, because the mean of its divisors is an integer number (16100532).

Almost surely, 2^222261247 is an apocalyptic number.

222261247 is a deficient number, since it is larger than the sum of its proper divisors (35347265).

222261247 is a wasteful number, since it uses less digits than its factorization.

222261247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16578.

The product of its digits is 5376, while the sum is 28.

The square root of 222261247 is about 14908.4287233766. The cubic root of 222261247 is about 605.7423185657.

The spelling of 222261247 in words is "two hundred twenty-two million, two hundred sixty-one thousand, two hundred forty-seven".