2143224204021 has 16 divisors (see below), whose sum is σ = 3191770782720. Its totient is φ = 1421335419840.

The previous prime is 2143224203971. The next prime is 2143224204031. The reversal of 2143224204021 is 1204024223412.

It is a happy number.

2143224204021 is a `hidden beast` number, since 2 + 1 + 432 + 2 + 4 + 204 + 0 + 21 = 666.

It is not a de Polignac number, because 2143224204021 - 2⁹ = 2143224203509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143224204031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207792420 + ... + 207802733.

It is an arithmetic number, because the mean of its divisors is an integer number (199485673920).

Almost surely, 2^{2143224204021} is an apocalyptic number.

It is an amenable number.

2143224204021 is a deficient number, since it is larger than the sum of its proper divisors (1048546578699).

2143224204021 is a wasteful number, since it uses less digits than its factorization.

2143224204021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415595353 (or 415595347 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 2143224204021 its reverse (1204024223412), we get a palindrome (3347248427433).

The spelling of 2143224204021 in words is "two trillion, one hundred forty-three billion, two hundred twenty-four million, two hundred four thousand, twenty-one".