12001300521 has 32 divisors (see below), whose sum is σ = 19177532160. Its totient is φ = 6530678784.

The previous prime is 12001300517. The next prime is 12001300523. The reversal of 12001300521 is 12500310021.

It is not a de Polignac number, because 12001300521 - 2² = 12001300517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12001300521.

It is not an unprimeable number, because it can be changed into a prime (12001300523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90520 + ... + 179433.

It is an arithmetic number, because the mean of its divisors is an integer number (599297880).

Almost surely, 2^12001300521 is an apocalyptic number.

It is an amenable number.

12001300521 is a deficient number, since it is larger than the sum of its proper divisors (7176231639).

12001300521 is a wasteful number, since it uses less digits than its factorization.

12001300521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270065.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 12001300521 its reverse (12500310021), we get a palindrome (24501610542).

The spelling of 12001300521 in words is "twelve billion, one million, three hundred thousand, five hundred twenty-one".