2043013021 has 8 divisors (see below), whose sum is σ = 2338452864. Its totient is φ = 1748468400.

The previous prime is 2043013013. The next prime is 2043013039. The reversal of 2043013021 is 1203103402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2043013021 - 2³ = 2043013013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2043012986 and 2043013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043013421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218905 + ... + 228046.

It is an arithmetic number, because the mean of its divisors is an integer number (292306608).

Almost surely, 2^2043013021 is an apocalyptic number.

It is an amenable number.

2043013021 is a deficient number, since it is larger than the sum of its proper divisors (295439843).

2043013021 is an equidigital number, since it uses as much as digits as its factorization.

2043013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447611.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2043013021 is about 45199.7015587493. The cubic root of 2043013021 is about 1268.8892309013.

Adding to 2043013021 its reverse (1203103402), we get a palindrome (3246116423).

The spelling of 2043013021 in words is "two billion, forty-three million, thirteen thousand, twenty-one".