321132221225 has 6 divisors (see below), whose sum is σ = 398203954350. Its totient is φ = 256905776960.

The previous prime is 321132221099. The next prime is 321132221239. The reversal of 321132221225 is 522122231123.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 884884009 + 320247337216 = 29747^2 + 565904^2 .

It is a de Polignac number, because none of the positive numbers 2^k-321132221225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321132221194 and 321132221203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6422644400 + ... + 6422644449.

It is an arithmetic number, because the mean of its divisors is an integer number (66367325725).

Almost surely, 2^321132221225 is an apocalyptic number.

It is an amenable number.

321132221225 is a deficient number, since it is larger than the sum of its proper divisors (77071733125).

321132221225 is a wasteful number, since it uses less digits than its factorization.

321132221225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12845288859 (or 12845288854 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

Adding to 321132221225 its reverse (522122231123), we get a palindrome (843254452348).

The spelling of 321132221225 in words is "three hundred twenty-one billion, one hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty-five".