12662422521 has 16 divisors (see below), whose sum is σ = 19328578944. Its totient is φ = 7223122944.

The previous prime is 12662422501. The next prime is 12662422541. The reversal of 12662422521 is 12522426621.

It is an interprime number because it is at equal distance from previous prime (12662422501) and next prime (12662422541).

It is not a de Polignac number, because 12662422521 - 2⁵ = 12662422489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12662422501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510390 + ... + 534623.

It is an arithmetic number, because the mean of its divisors is an integer number (1208036184).

Almost surely, 2^12662422521 is an apocalyptic number.

It is an amenable number.

12662422521 is a deficient number, since it is larger than the sum of its proper divisors (6666156423).

12662422521 is a wasteful number, since it uses less digits than its factorization.

12662422521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045600.

The product of its digits is 23040, while the sum is 33.

The spelling of 12662422521 in words is "twelve billion, six hundred sixty-two million, four hundred twenty-two thousand, five hundred twenty-one".