10721143 has 2 divisors, whose sum is σ = 10721144. Its totient is φ = 10721142.

The previous prime is 10721141. The next prime is 10721153. The reversal of 10721143 is 34112701.

10721143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10721143 - 2¹ = 10721141 is a prime.

It is a super-3 number, since 3×10721143³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 10721141, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10721143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10721141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360571 + 5360572.

It is an arithmetic number, because the mean of its divisors is an integer number (5360572).

Almost surely, 2^10721143 is an apocalyptic number.

10721143 is a deficient number, since it is larger than the sum of its proper divisors (1).

10721143 is an equidigital number, since it uses as much as digits as its factorization.

10721143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 10721143 is about 3274.3156536901. The cubic root of 10721143 is about 220.5025906254.

Adding to 10721143 its reverse (34112701), we get a palindrome (44833844).

The spelling of 10721143 in words is "ten million, seven hundred twenty-one thousand, one hundred forty-three".