228121104 has 40 divisors (see below), whose sum is σ = 595047232. Its totient is φ = 75300480.

The previous prime is 228121097. The next prime is 228121109. The reversal of 228121104 is 401121822.

It is a super-3 number, since 3×228121104³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (228121109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18127 + ... + 28014.

Almost surely, 2^228121104 is an apocalyptic number.

228121104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

228121104 is an abundant number, since it is smaller than the sum of its proper divisors (366926128).

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

228121104 is a wasteful number, since it uses less digits than its factorization.

228121104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46255 (or 46249 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 228121104 is about 15103.6784923409. The cubic root of 228121104 is about 611.0196187682.

Adding to 228121104 its reverse (401121822), we get a palindrome (629242926).

The spelling of 228121104 in words is "two hundred twenty-eight million, one hundred twenty-one thousand, one hundred four".