12126466421 has 8 divisors (see below), whose sum is σ = 12410137344. Its totient is φ = 11842871040.

The previous prime is 12126466403. The next prime is 12126466427. The reversal of 12126466421 is 12466462121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12126466421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126466427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427925 + ... + 455381.

It is an arithmetic number, because the mean of its divisors is an integer number (1551267168).

Almost surely, 2^12126466421 is an apocalyptic number.

It is an amenable number.

12126466421 is a deficient number, since it is larger than the sum of its proper divisors (283670923).

12126466421 is a wasteful number, since it uses less digits than its factorization.

12126466421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37771.

The product of its digits is 27648, while the sum is 35.

The spelling of 12126466421 in words is "twelve billion, one hundred twenty-six million, four hundred sixty-six thousand, four hundred twenty-one".