2143421333 has 4 divisors (see below), whose sum is σ = 2151571488. Its totient is φ = 2135271180.

The previous prime is 2143421309. The next prime is 2143421339. The reversal of 2143421333 is 3331243412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143421333 - 2¹⁰ = 2143420309 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 (2143421339) 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, 4074683 + ... + 4075208.

It is an arithmetic number, because the mean of its divisors is an integer number (537892872).

Almost surely, 2^2143421333 is an apocalyptic number.

It is an amenable number.

2143421333 is a deficient number, since it is larger than the sum of its proper divisors (8150155).

2143421333 is an equidigital number, since it uses as much as digits as its factorization.

2143421333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8150154.

The product of its digits is 5184, while the sum is 26.

The square root of 2143421333 is about 46297.0985375974. The cubic root of 2143421333 is about 1289.3451262131.

Adding to 2143421333 its reverse (3331243412), we get a palindrome (5474664745).

The spelling of 2143421333 in words is "two billion, one hundred forty-three million, four hundred twenty-one thousand, three hundred thirty-three".