12726901021 has 8 divisors (see below), whose sum is σ = 12945391200. Its totient is φ = 12510224400.

The previous prime is 12726901001. The next prime is 12726901037. The reversal of 12726901021 is 12010962721.

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-12726901021 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 (12726901001) 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, 439231 + ... + 467308.

It is an arithmetic number, because the mean of its divisors is an integer number (1618173900).

Almost surely, 2^12726901021 is an apocalyptic number.

It is an amenable number.

12726901021 is a deficient number, since it is larger than the sum of its proper divisors (218490179).

12726901021 is a wasteful number, since it uses less digits than its factorization.

12726901021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906779.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 12726901021 in words is "twelve billion, seven hundred twenty-six million, nine hundred one thousand, twenty-one".