12103003515 has 32 divisors (see below), whose sum is σ = 20390388480. Its totient is φ = 6113287296.

The previous prime is 12103003501. The next prime is 12103003531. The reversal of 12103003515 is 51530030121.

It is not a de Polignac number, because 12103003515 - 2⁵ = 12103003483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12103003491 and 12103003500.

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 31 ways as a sum of consecutive naturals, for example, 1515924 + ... + 1523886.

It is an arithmetic number, because the mean of its divisors is an integer number (637199640).

Almost surely, 2^12103003515 is an apocalyptic number.

12103003515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12103003515 is a deficient number, since it is larger than the sum of its proper divisors (8287384965).

12103003515 is a wasteful number, since it uses less digits than its factorization.

12103003515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13323.

The product of its (nonzero) digits is 450, while the sum is 21.

Adding to 12103003515 its reverse (51530030121), we get a palindrome (63633033636).

The spelling of 12103003515 in words is "twelve billion, one hundred three million, three thousand, five hundred fifteen".