21250641460201 has 8 divisors (see below), whose sum is σ = 22808907676584. Its totient is φ = 19726622853120.

The previous prime is 21250641460193. The next prime is 21250641460267. The reversal of 21250641460201 is 10206414605212.

It can be written as a sum of positive squares in 4 ways, for example, as 1006931971600 + 20243709488601 = 1003460^2 + 4499301^2 .

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 21250641460201 - 2³ = 21250641460193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21250641460271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8561901040 + ... + 8561903521.

It is an arithmetic number, because the mean of its divisors is an integer number (2851113459573).

Almost surely, 2^{21250641460201} is an apocalyptic number.

It is an amenable number.

21250641460201 is a deficient number, since it is larger than the sum of its proper divisors (1558266216383).

21250641460201 is a wasteful number, since it uses less digits than its factorization.

21250641460201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17123804651.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 21250641460201 in words is "twenty-one trillion, two hundred fifty billion, six hundred forty-one million, four hundred sixty thousand, two hundred one".