10643125441221 has 48 divisors (see below), whose sum is σ = 19116175047424. Its totient is φ = 5556080397312.

The previous prime is 10643125441183. The next prime is 10643125441243. The reversal of 10643125441221 is 12214452134601.

10643125441221 is a `hidden beast` number, since 1 + 0 + 64 + 31 + 2 + 544 + 1 + 2 + 21 = 666.

It is not a de Polignac number, because 10643125441221 - 2¹¹ = 10643125439173 is a prime.

It is a super-2 number, since 2×10643125441221² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643125446221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66906481 + ... + 67065366.

Almost surely, 2^{10643125441221} is an apocalyptic number.

It is an amenable number.

10643125441221 is a deficient number, since it is larger than the sum of its proper divisors (8473049606203).

10643125441221 is a wasteful number, since it uses less digits than its factorization.

10643125441221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133971970 (or 133971967 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 10643125441221 its reverse (12214452134601), we get a palindrome (22857577575822).

The spelling of 10643125441221 in words is "ten trillion, six hundred forty-three billion, one hundred twenty-five million, four hundred forty-one thousand, two hundred twenty-one".