222720255 has 24 divisors (see below), whose sum is σ = 391491360. Its totient is φ = 117109440.

The previous prime is 222720233. The next prime is 222720259. The reversal of 222720255 is 552027222.

It is not a de Polignac number, because 222720255 - 2⁶ = 222720191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222720259) 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 in 23 ways as a sum of consecutive naturals, for example, 31660 + ... + 38049.

It is an arithmetic number, because the mean of its divisors is an integer number (16312140).

Almost surely, 2^222720255 is an apocalyptic number.

222720255 is a deficient number, since it is larger than the sum of its proper divisors (168771105).

222720255 is a wasteful number, since it uses less digits than its factorization.

222720255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69791 (or 69788 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 222720255 is about 14923.8150283364. The cubic root of 222720255 is about 606.1590194715.

Adding to 222720255 its reverse (552027222), we get a palindrome (774747477).

The spelling of 222720255 in words is "two hundred twenty-two million, seven hundred twenty thousand, two hundred fifty-five".