228079121 has 8 divisors (see below), whose sum is σ = 237600000. Its totient is φ = 218693520.

The previous prime is 228079099. The next prime is 228079139. The reversal of 228079121 is 121970822.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228079121 is a prime.

It is a super-2 number, since 2×228079121² = 104040170872265282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228079421) 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, 30371 + ... + 37128.

It is an arithmetic number, because the mean of its divisors is an integer number (29700000).

Almost surely, 2^228079121 is an apocalyptic number.

It is an amenable number.

228079121 is a deficient number, since it is larger than the sum of its proper divisors (9520879).

228079121 is a wasteful number, since it uses less digits than its factorization.

228079121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67639.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 228079121 is about 15102.2886014008. The cubic root of 228079121 is about 610.9821328159.

The spelling of 228079121 in words is "two hundred twenty-eight million, seventy-nine thousand, one hundred twenty-one".