12103515020 has 12 divisors (see below), whose sum is σ = 25417381584. Its totient is φ = 4841406000.

The previous prime is 12103514993. The next prime is 12103515031. The reversal of 12103515020 is 2051530121.

It is a happy number.

It is a super-3 number, since 3×12103515020³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 605175751 = 12103515020 / (1 + 2 + 1 + 0 + 3 + 5 + 1 + 5 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 12103514983 and 12103515001.

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 3 ways as a sum of consecutive naturals, for example, 302587856 + ... + 302587895.

It is an arithmetic number, because the mean of its divisors is an integer number (2118115132).

Almost surely, 2^12103515020 is an apocalyptic number.

12103515020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103515020 is an abundant number, since it is smaller than the sum of its proper divisors (13313866564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12103515020 is a wasteful number, since it uses less digits than its factorization.

12103515020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605175760 (or 605175758 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The spelling of 12103515020 in words is "twelve billion, one hundred three million, five hundred fifteen thousand, twenty".