2143441403421 has 16 divisors (see below), whose sum is σ = 2919469707264. Its totient is φ = 1398202455024.

The previous prime is 2143441403407. The next prime is 2143441403437. The reversal of 2143441403421 is 1243041443412.

It is a happy number.

It is not a de Polignac number, because 2143441403421 - 2⁶ = 2143441403357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143441405421) 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, 1371721 + ... + 2483646.

It is an arithmetic number, because the mean of its divisors is an integer number (182466856704).

Almost surely, 2^{2143441403421} is an apocalyptic number.

It is an amenable number.

2143441403421 is a deficient number, since it is larger than the sum of its proper divisors (776028303843).

2143441403421 is a wasteful number, since it uses less digits than its factorization.

2143441403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859360.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 2143441403421 its reverse (1243041443412), we get a palindrome (3386482846833).

The spelling of 2143441403421 in words is "two trillion, one hundred forty-three billion, four hundred forty-one million, four hundred three thousand, four hundred twenty-one".