10021143 has 16 divisors (see below), whose sum is σ = 15434496. Its totient is φ = 5715840.

The previous prime is 10021129. The next prime is 10021147. The reversal of 10021143 is 34112001.

It is a happy number.

10021143 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 10021143 - 2⁴ = 10021127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8371 + ... + 9492.

It is an arithmetic number, because the mean of its divisors is an integer number (964656).

Almost surely, 2^10021143 is an apocalyptic number.

10021143 is a deficient number, since it is larger than the sum of its proper divisors (5413353).

10021143 is a wasteful number, since it uses less digits than its factorization.

10021143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17894.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 10021143 is about 3165.6188968352. The cubic root of 10021143 is about 215.5951994943.

Adding to 10021143 its reverse (34112001), we get a palindrome (44133144).

It can be divided in two parts, 1002 and 1143, that added together give a triangular number (2145 = T₆₅).

The spelling of 10021143 in words is "ten million, twenty-one thousand, one hundred forty-three".