228112011 has 8 divisors (see below), whose sum is σ = 337943760. Its totient is φ = 152074656.

The previous prime is 228111973. The next prime is 228112021. The reversal of 228112011 is 110211822.

It is not a de Polignac number, because 228112011 - 2¹³ = 228103819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228112021) 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, 4224270 + ... + 4224323.

It is an arithmetic number, because the mean of its divisors is an integer number (42242970).

Almost surely, 2^228112011 is an apocalyptic number.

228112011 is a deficient number, since it is larger than the sum of its proper divisors (109831749).

228112011 is an equidigital number, since it uses as much as digits as its factorization.

228112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8448602 (or 8448596 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 228112011 is about 15103.3774699568. The cubic root of 228112011 is about 611.0115001635.

Adding to 228112011 its reverse (110211822), we get a palindrome (338323833).

The spelling of 228112011 in words is "two hundred twenty-eight million, one hundred twelve thousand, eleven".