2121043143 has 4 divisors (see below), whose sum is σ = 2828057528. Its totient is φ = 1414028760.

The previous prime is 2121043123. The next prime is 2121043163. The reversal of 2121043143 is 3413401212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2121043123) and next prime (2121043163).

It is not a de Polignac number, because 2121043143 - 2⁸ = 2121042887 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 (2121043123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353507188 + ... + 353507193.

It is an arithmetic number, because the mean of its divisors is an integer number (707014382).

Almost surely, 2^2121043143 is an apocalyptic number.

2121043143 is a deficient number, since it is larger than the sum of its proper divisors (707014385).

2121043143 is an equidigital number, since it uses as much as digits as its factorization.

2121043143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707014384.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2121043143 is about 46054.7841488808. The cubic root of 2121043143 is about 1284.8423235601.

Adding to 2121043143 its reverse (3413401212), we get a palindrome (5534444355).

The spelling of 2121043143 in words is "two billion, one hundred twenty-one million, forty-three thousand, one hundred forty-three".