228011129 has 2 divisors, whose sum is σ = 228011130. Its totient is φ = 228011128.

The previous prime is 228011093. The next prime is 228011159. The reversal of 228011129 is 921110822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202407529 + 25603600 = 14227^2 + 5060^2 .

It is a cyclic number.

It is not a de Polignac number, because 228011129 - 2⁸ = 228010873 is a prime.

It is equal to p_12539105 and since 228011129 and 12539105 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 228011098 and 228011107.

It is not a weakly prime, because it can be changed into another prime (228011159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114005564 + 114005565.

It is an arithmetic number, because the mean of its divisors is an integer number (114005565).

Almost surely, 2^228011129 is an apocalyptic number.

It is an amenable number.

228011129 is a deficient number, since it is larger than the sum of its proper divisors (1).

228011129 is an equidigital number, since it uses as much as digits as its factorization.

228011129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 228011129 is about 15100.0373840597. The cubic root of 228011129 is about 610.9214140827.

The spelling of 228011129 in words is "two hundred twenty-eight million, eleven thousand, one hundred twenty-nine".