225324040121 has 2 divisors, whose sum is σ = 225324040122. Its totient is φ = 225324040120.

The previous prime is 225324040063. The next prime is 225324040169. The reversal of 225324040121 is 121040423522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224165318521 + 1158721600 = 473461^2 + 34040^2 .

It is a cyclic number.

It is not a de Polignac number, because 225324040121 - 2¹⁴ = 225324023737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (225324046121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112662020060 + 112662020061.

It is an arithmetic number, because the mean of its divisors is an integer number (112662020061).

Almost surely, 2^225324040121 is an apocalyptic number.

It is an amenable number.

225324040121 is a deficient number, since it is larger than the sum of its proper divisors (1).

225324040121 is an equidigital number, since it uses as much as digits as its factorization.

225324040121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 225324040121 its reverse (121040423522), we get a palindrome (346364463643).

The spelling of 225324040121 in words is "two hundred twenty-five billion, three hundred twenty-four million, forty thousand, one hundred twenty-one".