222775120 has 20 divisors (see below), whose sum is σ = 517952340. Its totient is φ = 89110016.

The previous prime is 222775117. The next prime is 222775141. The reversal of 222775120 is 21577222.

It can be written as a sum of positive squares in 2 ways, for example, as 49168144 + 173606976 = 7012^2 + 13176^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1392265 + ... + 1392424.

It is an arithmetic number, because the mean of its divisors is an integer number (25897617).

Almost surely, 2^222775120 is an apocalyptic number.

222775120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222775120 is an abundant number, since it is smaller than the sum of its proper divisors (295177220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222775120 is a wasteful number, since it uses less digits than its factorization.

222775120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784702 (or 2784696 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 222775120 is about 14925.6530845387. The cubic root of 222775120 is about 606.2087892063.

The spelling of 222775120 in words is "two hundred twenty-two million, seven hundred seventy-five thousand, one hundred twenty".