1215341221325 has 72 divisors (see below), whose sum is σ = 1896364416576. Its totient is φ = 756316915200.

The previous prime is 1215341221261. The next prime is 1215341221351. The reversal of 1215341221325 is 5231221435121.

It is not a de Polignac number, because 1215341221325 - 2⁶ = 1215341221261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1215341221291 and 1215341221300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12380837 + ... + 12478613.

Almost surely, 2^{1215341221325} is an apocalyptic number.

It is an amenable number.

1215341221325 is a deficient number, since it is larger than the sum of its proper divisors (681023195251).

1215341221325 is a wasteful number, since it uses less digits than its factorization.

1215341221325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98403 (or 98387 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

Adding to 1215341221325 its reverse (5231221435121), we get a palindrome (6446562656446).

The spelling of 1215341221325 in words is "one trillion, two hundred fifteen billion, three hundred forty-one million, two hundred twenty-one thousand, three hundred twenty-five".