2121421143 has 8 divisors (see below), whose sum is σ = 2994947568. Its totient is φ = 1331087744.

The previous prime is 2121421129. The next prime is 2121421163. The reversal of 2121421143 is 3411241212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121421143 - 2¹⁸ = 2121158999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121421163) 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, 20798196 + ... + 20798297.

It is an arithmetic number, because the mean of its divisors is an integer number (374368446).

Almost surely, 2^2121421143 is an apocalyptic number.

2121421143 is a deficient number, since it is larger than the sum of its proper divisors (873526425).

2121421143 is a wasteful number, since it uses less digits than its factorization.

2121421143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41596513.

The product of its digits is 384, while the sum is 21.

The square root of 2121421143 is about 46058.8877742396. The cubic root of 2121421143 is about 1284.9186447406.

Adding to 2121421143 its reverse (3411241212), we get a palindrome (5532662355).

The spelling of 2121421143 in words is "two billion, one hundred twenty-one million, four hundred twenty-one thousand, one hundred forty-three".