222138375 has 16 divisors (see below), whose sum is σ = 369638880. Its totient is φ = 118473600.

The previous prime is 222138353. The next prime is 222138377. The reversal of 222138375 is 573831222.

It is not a de Polignac number, because 222138375 - 2⁹ = 222137863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222138377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295810 + ... + 296559.

It is an arithmetic number, because the mean of its divisors is an integer number (23102430).

Almost surely, 2^222138375 is an apocalyptic number.

222138375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

222138375 is a deficient number, since it is larger than the sum of its proper divisors (147500505).

222138375 is an equidigital number, since it uses as much as digits as its factorization.

222138375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592387 (or 592377 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 222138375 is about 14904.3072633383. The cubic root of 222138375 is about 605.6306744370.

Adding to 222138375 its reverse (573831222), we get a palindrome (795969597).

The spelling of 222138375 in words is "two hundred twenty-two million, one hundred thirty-eight thousand, three hundred seventy-five".