2021019143 has 32 divisors (see below), whose sum is σ = 2582072640. Its totient is φ = 1552988160.

The previous prime is 2021019101. The next prime is 2021019181. The reversal of 2021019143 is 3419101202.

It is a cyclic number.

It is not a de Polignac number, because 2021019143 - 2²⁸ = 1752583687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021019643) 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, 78713 + ... + 101181.

It is an arithmetic number, because the mean of its divisors is an integer number (80689770).

Almost surely, 2^2021019143 is an apocalyptic number.

2021019143 is a deficient number, since it is larger than the sum of its proper divisors (561053497).

2021019143 is a wasteful number, since it uses less digits than its factorization.

2021019143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22547.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2021019143 is about 44955.7464958597. The cubic root of 2021019143 is about 1264.3194208141.

The spelling of 2021019143 in words is "two billion, twenty-one million, nineteen thousand, one hundred forty-three".