325101221 has 2 divisors, whose sum is σ = 325101222. Its totient is φ = 325101220.

The previous prime is 325101211. The next prime is 325101239. The reversal of 325101221 is 122101523.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196392196 + 128709025 = 14014^2 + 11345^2 .

It is an emirp because it is prime and its reverse (122101523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 325101221 - 2⁶ = 325101157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 325101221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162550610 + 162550611.

It is an arithmetic number, because the mean of its divisors is an integer number (162550611).

Almost surely, 2^325101221 is an apocalyptic number.

It is an amenable number.

325101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

325101221 is an equidigital number, since it uses as much as digits as its factorization.

325101221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 325101221 is about 18030.5635241941. The cubic root of 325101221 is about 687.6058034850.

Adding to 325101221 its reverse (122101523), we get a palindrome (447202744).

The spelling of 325101221 in words is "three hundred twenty-five million, one hundred one thousand, two hundred twenty-one".