1215420253324 has 6 divisors (see below), whose sum is σ = 2126985443324. Its totient is φ = 607710126660.

The previous prime is 1215420253249. The next prime is 1215420253337. The reversal of 1215420253324 is 4233520245121.

It is a self number, because there is not a number n which added to its sum of digits gives 1215420253324.

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 as a sum of consecutive naturals, namely, 151927531662 + ... + 151927531669.

Almost surely, 2^{1215420253324} is an apocalyptic number.

It is an amenable number.

1215420253324 is a deficient number, since it is larger than the sum of its proper divisors (911565190000).

1215420253324 is a wasteful number, since it uses less digits than its factorization.

1215420253324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303855063335 (or 303855063333 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 1215420253324 its reverse (4233520245121), we get a palindrome (5448940498445).

The spelling of 1215420253324 in words is "one trillion, two hundred fifteen billion, four hundred twenty million, two hundred fifty-three thousand, three hundred twenty-four".