2443442132221 has 4 divisors (see below), whose sum is σ = 2527698757500. Its totient is φ = 2359185506944.

The previous prime is 2443442132207. The next prime is 2443442132317. The reversal of 2443442132221 is 1222312443442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2041155116100 + 402287016121 = 1428690^2 + 634261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2443442132221 - 2⁹ = 2443442131709 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 (2443442132321) 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, 42128312596 + ... + 42128312653.

It is an arithmetic number, because the mean of its divisors is an integer number (631924689375).

Almost surely, 2^{2443442132221} is an apocalyptic number.

It is an amenable number.

2443442132221 is a deficient number, since it is larger than the sum of its proper divisors (84256625279).

2443442132221 is an equidigital number, since it uses as much as digits as its factorization.

2443442132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84256625278.

The product of its digits is 73728, while the sum is 34.

Adding to 2443442132221 its reverse (1222312443442), we get a palindrome (3665754575663).

The spelling of 2443442132221 in words is "two trillion, four hundred forty-three billion, four hundred forty-two million, one hundred thirty-two thousand, two hundred twenty-one".