228340124221 has 16 divisors (see below), whose sum is σ = 269884916928. Its totient is φ = 190827705600.

The previous prime is 228340124219. The next prime is 228340124227. The reversal of 228340124221 is 122421043822.

It is a cyclic number.

It is not a de Polignac number, because 228340124221 - 2¹ = 228340124219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228340124227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14190450 + ... + 14206531.

It is an arithmetic number, because the mean of its divisors is an integer number (16867807308).

Almost surely, 2^228340124221 is an apocalyptic number.

It is an amenable number.

228340124221 is a deficient number, since it is larger than the sum of its proper divisors (41544792707).

228340124221 is a wasteful number, since it uses less digits than its factorization.

228340124221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28397052.

The product of its (nonzero) digits is 12288, while the sum is 31.

The spelling of 228340124221 in words is "two hundred twenty-eight billion, three hundred forty million, one hundred twenty-four thousand, two hundred twenty-one".