12128270012 has 6 divisors (see below), whose sum is σ = 21224472528. Its totient is φ = 6064135004.

The previous prime is 12128269991. The next prime is 12128270017. The reversal of 12128270012 is 21007282121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128270017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516033748 + ... + 1516033755.

It is an arithmetic number, because the mean of its divisors is an integer number (3537412088).

Almost surely, 2^12128270012 is an apocalyptic number.

It is an amenable number.

12128270012 is a deficient number, since it is larger than the sum of its proper divisors (9096202516).

12128270012 is a wasteful number, since it uses less digits than its factorization.

12128270012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032067507 (or 3032067505 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The spelling of 12128270012 in words is "twelve billion, one hundred twenty-eight million, two hundred seventy thousand, twelve".