12501260021 has 8 divisors (see below), whose sum is σ = 12810235200. Its totient is φ = 12192478560.

The previous prime is 12501260003. The next prime is 12501260033. The reversal of 12501260021 is 12006210521.

12501260021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12501260021 - 2⁶ = 12501259957 is a prime.

It is a super-2 number, since 2×12501260021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12501259975 and 12501260002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501260921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86840 + ... + 180398.

It is an arithmetic number, because the mean of its divisors is an integer number (1601279400).

Almost surely, 2^12501260021 is an apocalyptic number.

It is an amenable number.

12501260021 is a deficient number, since it is larger than the sum of its proper divisors (308975179).

12501260021 is an equidigital number, since it uses as much as digits as its factorization.

12501260021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96859.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 12501260021 its reverse (12006210521), we get a palindrome (24507470542).

The spelling of 12501260021 in words is "twelve billion, five hundred one million, two hundred sixty thousand, twenty-one".