226185121 has 2 divisors, whose sum is σ = 226185122. Its totient is φ = 226185120.

The previous prime is 226185077. The next prime is 226185131. The reversal of 226185121 is 121581622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212576400 + 13608721 = 14580^2 + 3689^2 .

It is a cyclic number.

It is not a de Polignac number, because 226185121 - 2¹¹ = 226183073 is a prime.

It is equal to p_12444391 and since 226185121 and 12444391 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 226185121.

It is not a weakly prime, because it can be changed into another prime (226185131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113092560 + 113092561.

It is an arithmetic number, because the mean of its divisors is an integer number (113092561).

Almost surely, 2^226185121 is an apocalyptic number.

It is an amenable number.

226185121 is a deficient number, since it is larger than the sum of its proper divisors (1).

226185121 is an equidigital number, since it uses as much as digits as its factorization.

226185121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 28.

The square root of 226185121 is about 15039.4521509262. The cubic root of 226185121 is about 609.2862035015.

The spelling of 226185121 in words is "two hundred twenty-six million, one hundred eighty-five thousand, one hundred twenty-one".