12520011 has 16 divisors (see below), whose sum is σ = 19341824. Its totient is φ = 7055424.

The previous prime is 12520003. The next prime is 12520021. The reversal of 12520011 is 11002521.

It is not a de Polignac number, because 12520011 - 2³ = 12520003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12520021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2551 + ... + 5616.

It is an arithmetic number, because the mean of its divisors is an integer number (1208864).

Almost surely, 2^12520011 is an apocalyptic number.

12520011 is a deficient number, since it is larger than the sum of its proper divisors (6821813).

12520011 is an equidigital number, since it uses as much as digits as its factorization.

12520011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 12520011 is about 3538.3627569824. The cubic root of 12520011 is about 232.2032194319.

Adding to 12520011 its reverse (11002521), we get a palindrome (23522532).

The spelling of 12520011 in words is "twelve million, five hundred twenty thousand, eleven".