228138122 has 8 divisors (see below), whose sum is σ = 342271872. Its totient is φ = 114047500.

The previous prime is 228138089. The next prime is 228138151. The reversal of 228138122 is 221831822.

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

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, 12497 + ... + 24747.

It is an arithmetic number, because the mean of its divisors is an integer number (42783984).

Almost surely, 2^228138122 is an apocalyptic number.

228138122 is a deficient number, since it is larger than the sum of its proper divisors (114133750).

228138122 is a wasteful number, since it uses less digits than its factorization.

228138122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21564.

The product of its digits is 3072, while the sum is 29.

The square root of 228138122 is about 15104.2418545255. The cubic root of 228138122 is about 611.0348125594.

Adding to 228138122 its reverse (221831822), we get a palindrome (449969944).

The spelling of 228138122 in words is "two hundred twenty-eight million, one hundred thirty-eight thousand, one hundred twenty-two".