321225004215 has 24 divisors (see below), whose sum is σ = 556821682560. Its totient is φ = 171310256064.

The previous prime is 321225004189. The next prime is 321225004229. The reversal of 321225004215 is 512400522123.

321225004215 is a `hidden beast` number, since 3 + 212 + 25 + 0 + 0 + 421 + 5 = 666.

It is not a de Polignac number, because 321225004215 - 2⁹ = 321225003703 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 634746 + ... + 1022424.

It is an arithmetic number, because the mean of its divisors is an integer number (23200903440).

Almost surely, 2^321225004215 is an apocalyptic number.

321225004215 is a deficient number, since it is larger than the sum of its proper divisors (235596678345).

321225004215 is a wasteful number, since it uses less digits than its factorization.

321225004215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406103 (or 406100 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 321225004215 its reverse (512400522123), we get a palindrome (833625526338).

The spelling of 321225004215 in words is "three hundred twenty-one billion, two hundred twenty-five million, four thousand, two hundred fifteen".