1215530500303 has 16 divisors (see below), whose sum is σ = 1396544532480. Its totient is φ = 1036358906400.

The previous prime is 1215530500297. The next prime is 1215530500339. The reversal of 1215530500303 is 3030050355121.

It is a cyclic number.

It is not a de Polignac number, because 1215530500303 - 2²⁹ = 1214993629391 is a prime.

It is a super-2 number, since 2×1215530500303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215530500343) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 34772608 + ... + 34807546.

It is an arithmetic number, because the mean of its divisors is an integer number (87284033280).

Almost surely, 2^{1215530500303} is an apocalyptic number.

1215530500303 is a deficient number, since it is larger than the sum of its proper divisors (181014032177).

1215530500303 is a wasteful number, since it uses less digits than its factorization.

1215530500303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61158.

The product of its (nonzero) digits is 6750, while the sum is 28.

Adding to 1215530500303 its reverse (3030050355121), we get a palindrome (4245580855424).

The spelling of 1215530500303 in words is "one trillion, two hundred fifteen billion, five hundred thirty million, five hundred thousand, three hundred three".