12520999 has 2 divisors, whose sum is σ = 12521000. Its totient is φ = 12520998.

The previous prime is 12520997. The next prime is 12521009. The reversal of 12520999 is 99902521.

12520999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12520999 - 2¹ = 12520997 is a prime.

Together with 12520997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12520997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260499 + 6260500.

It is an arithmetic number, because the mean of its divisors is an integer number (6260500).

Almost surely, 2^12520999 is an apocalyptic number.

12520999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520999 is an equidigital number, since it uses as much as digits as its factorization.

12520999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 12520999 is about 3538.5023668213. The cubic root of 12520999 is about 232.2093272739.

The spelling of 12520999 in words is "twelve million, five hundred twenty thousand, nine hundred ninety-nine".