222904181 has 8 divisors (see below), whose sum is σ = 234845280. Its totient is φ = 210984048.

The previous prime is 222904147. The next prime is 222904189. The reversal of 222904181 is 181409222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222904181 - 2⁶ = 222904117 is a prime.

It is a super-2 number, since 2×222904181² = 99372547814561522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222904189) 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 7 ways as a sum of consecutive naturals, for example, 19670 + ... + 28856.

It is an arithmetic number, because the mean of its divisors is an integer number (29355660).

Almost surely, 2^222904181 is an apocalyptic number.

It is an amenable number.

222904181 is a deficient number, since it is larger than the sum of its proper divisors (11941099).

222904181 is a wasteful number, since it uses less digits than its factorization.

222904181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 222904181 is about 14929.9759209451. The cubic root of 222904181 is about 606.3258322119.

The spelling of 222904181 in words is "two hundred twenty-two million, nine hundred four thousand, one hundred eighty-one".