10521217143 has 16 divisors (see below), whose sum is σ = 15881084640. Its totient is φ = 6881801472.

The previous prime is 10521217141. The next prime is 10521217151. The reversal of 10521217143 is 34171212501.

10521217143 is a `hidden beast` number, since 10 + 521 + 21 + 71 + 43 = 666.

10521217143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10521217143 - 2¹ = 10521217141 is a prime.

It is a super-2 number, since 2×10521217143² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521217141) 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 15 ways as a sum of consecutive naturals, for example, 3674746 + ... + 3677607.

It is an arithmetic number, because the mean of its divisors is an integer number (992567790).

Almost surely, 2^10521217143 is an apocalyptic number.

10521217143 is a deficient number, since it is larger than the sum of its proper divisors (5359867497).

10521217143 is an equidigital number, since it uses as much as digits as its factorization.

10521217143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7352415 (or 7352409 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

Adding to 10521217143 its reverse (34171212501), we get a palindrome (44692429644).

The spelling of 10521217143 in words is "ten billion, five hundred twenty-one million, two hundred seventeen thousand, one hundred forty-three".