12252421426666 has 16 divisors (see below), whose sum is σ = 19673825666400. Its totient is φ = 5705409441168.

The previous prime is 12252421426643. The next prime is 12252421426747. The reversal of 12252421426666 is 66662412425221.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2732473545 + ... + 2732478028.

It is an arithmetic number, because the mean of its divisors is an integer number (1229614104150).

Almost surely, 2^{12252421426666} is an apocalyptic number.

12252421426666 is a deficient number, since it is larger than the sum of its proper divisors (7421404239734).

12252421426666 is a wasteful number, since it uses less digits than its factorization.

12252421426666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464951653.

The product of its digits is 3317760, while the sum is 49.

The spelling of 12252421426666 in words is "twelve trillion, two hundred fifty-two billion, four hundred twenty-one million, four hundred twenty-six thousand, six hundred sixty-six".