12520120203 has 12 divisors (see below), whose sum is σ = 19148419368. Its totient is φ = 7855761600.

The previous prime is 12520120189. The next prime is 12520120231. The reversal of 12520120203 is 30202102521.

12520120203 is a `hidden beast` number, since 1 + 2 + 520 + 120 + 20 + 3 = 666.

It is not a de Polignac number, because 12520120203 - 2⁴ = 12520120187 is a prime.

It is a super-2 number, since 2×12520120203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12520120003) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 40915273 + ... + 40915578.

It is an arithmetic number, because the mean of its divisors is an integer number (1595701614).

Almost surely, 2^12520120203 is an apocalyptic number.

12520120203 is a deficient number, since it is larger than the sum of its proper divisors (6628299165).

12520120203 is a wasteful number, since it uses less digits than its factorization.

12520120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81830874 (or 81830871 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 12520120203 its reverse (30202102521), we get a palindrome (42722222724).

The spelling of 12520120203 in words is "twelve billion, five hundred twenty million, one hundred twenty thousand, two hundred three".