10143121521 has 32 divisors (see below), whose sum is σ = 14966138880. Its totient is φ = 6071010624.

The previous prime is 10143121453. The next prime is 10143121537. The reversal of 10143121521 is 12512134101.

It is not a de Polignac number, because 10143121521 - 2⁷ = 10143121393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10143121561) 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, 388150 + ... + 413456.

It is an arithmetic number, because the mean of its divisors is an integer number (467691840).

Almost surely, 2^10143121521 is an apocalyptic number.

It is an amenable number.

10143121521 is a deficient number, since it is larger than the sum of its proper divisors (4823017359).

10143121521 is a wasteful number, since it uses less digits than its factorization.

10143121521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25605.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 10143121521 its reverse (12512134101), we get a palindrome (22655255622).

The spelling of 10143121521 in words is "ten billion, one hundred forty-three million, one hundred twenty-one thousand, five hundred twenty-one".