12521606333 has 2 divisors, whose sum is σ = 12521606334. Its totient is φ = 12521606332.

The previous prime is 12521606329. The next prime is 12521606371. The reversal of 12521606333 is 33360612521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9820413604 + 2701192729 = 99098^2 + 51973^2 .

It is a cyclic number.

It is not a de Polignac number, because 12521606333 - 2² = 12521606329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12521606333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12521606303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260803166 + 6260803167.

It is an arithmetic number, because the mean of its divisors is an integer number (6260803167).

Almost surely, 2^12521606333 is an apocalyptic number.

It is an amenable number.

12521606333 is a deficient number, since it is larger than the sum of its proper divisors (1).

12521606333 is an equidigital number, since it uses as much as digits as its factorization.

12521606333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The spelling of 12521606333 in words is "twelve billion, five hundred twenty-one million, six hundred six thousand, three hundred thirty-three".