10543115021 has 2 divisors, whose sum is σ = 10543115022. Its totient is φ = 10543115020.

The previous prime is 10543115017. The next prime is 10543115041. The reversal of 10543115021 is 12051134501.

10543115021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10325404996 + 217710025 = 101614^2 + 14755^2 .

It is a cyclic number.

It is not a de Polignac number, because 10543115021 - 2² = 10543115017 is a prime.

It is a super-2 number, since 2×10543115021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10543115041) 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 as a sum of consecutive naturals, namely, 5271557510 + 5271557511.

It is an arithmetic number, because the mean of its divisors is an integer number (5271557511).

Almost surely, 2^10543115021 is an apocalyptic number.

It is an amenable number.

10543115021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10543115021 is an equidigital number, since it uses as much as digits as its factorization.

10543115021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 10543115021 its reverse (12051134501), we get a palindrome (22594249522).

The spelling of 10543115021 in words is "ten billion, five hundred forty-three million, one hundred fifteen thousand, twenty-one".