2143441111021 has 64 divisors (see below), whose sum is σ = 2586957004800. Its totient is φ = 1737348028416.

The previous prime is 2143441110983. The next prime is 2143441111037. The reversal of 2143441111021 is 1201111443412.

It is not a de Polignac number, because 2143441111021 - 2¹⁹ = 2143440586733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143441111051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1086385791 + ... + 1086387763.

It is an arithmetic number, because the mean of its divisors is an integer number (40421203200).

Almost surely, 2^{2143441111021} is an apocalyptic number.

It is an amenable number.

2143441111021 is a deficient number, since it is larger than the sum of its proper divisors (443515893779).

2143441111021 is a wasteful number, since it uses less digits than its factorization.

2143441111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 2143441111021 its reverse (1201111443412), we get a palindrome (3344552554433).

The spelling of 2143441111021 in words is "two trillion, one hundred forty-three billion, four hundred forty-one million, one hundred eleven thousand, twenty-one".