10515211203 has 12 divisors (see below), whose sum is σ = 16309307400. Its totient is φ = 6008692032.

The previous prime is 10515211141. The next prime is 10515211207. The reversal of 10515211203 is 30211251501.

It is not a de Polignac number, because 10515211203 - 2⁸ = 10515210947 is a prime.

It is a super-2 number, since 2×10515211203² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 10515211203.

It is not an unprimeable number, because it can be changed into a prime (10515211207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35765878 + ... + 35766171.

It is an arithmetic number, because the mean of its divisors is an integer number (1359108950).

Almost surely, 2^10515211203 is an apocalyptic number.

10515211203 is a deficient number, since it is larger than the sum of its proper divisors (5794096197).

10515211203 is an equidigital number, since it uses as much as digits as its factorization.

10515211203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71532066 (or 71532059 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 10515211203 its reverse (30211251501), we get a palindrome (40726462704).

The spelling of 10515211203 in words is "ten billion, five hundred fifteen million, two hundred eleven thousand, two hundred three".