228774121 has 4 divisors (see below), whose sum is σ = 228828544. Its totient is φ = 228719700.

The previous prime is 228774101. The next prime is 228774131. The reversal of 228774121 is 121477822.

It is a happy number.

228774121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228774121 - 2¹⁵ = 228741353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228774101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20325 + ... + 29506.

It is an arithmetic number, because the mean of its divisors is an integer number (57207136).

Almost surely, 2^228774121 is an apocalyptic number.

It is an amenable number.

228774121 is a deficient number, since it is larger than the sum of its proper divisors (54423).

228774121 is an equidigital number, since it uses as much as digits as its factorization.

228774121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54422.

The product of its digits is 12544, while the sum is 34.

The square root of 228774121 is about 15125.2808568965. The cubic root of 228774121 is about 611.6020960364.

The spelling of 228774121 in words is "two hundred twenty-eight million, seven hundred seventy-four thousand, one hundred twenty-one".