12486260921 has 2 divisors, whose sum is σ = 12486260922. Its totient is φ = 12486260920.

The previous prime is 12486260911. The next prime is 12486261017. The reversal of 12486260921 is 12906268421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12367886521 + 118374400 = 111211^2 + 10880^2 .

It is a cyclic number.

It is not a de Polignac number, because 12486260921 - 2¹⁰ = 12486259897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12486260911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6243130460 + 6243130461.

It is an arithmetic number, because the mean of its divisors is an integer number (6243130461).

Almost surely, 2^12486260921 is an apocalyptic number.

It is an amenable number.

12486260921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12486260921 is an equidigital number, since it uses as much as digits as its factorization.

12486260921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 12486260921 in words is "twelve billion, four hundred eighty-six million, two hundred sixty thousand, nine hundred twenty-one".