443141234121221 has 4 divisors (see below), whose sum is σ = 447206750030700. Its totient is φ = 439075718211744.

The previous prime is 443141234121211. The next prime is 443141234121251. The reversal of 443141234121221 is 122121432141344.

It is a happy number.

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 146756603690596 + 296384630430625 = 12114314^2 + 17215825^2 .

It is a cyclic number.

It is not a de Polignac number, because 443141234121221 - 2²² = 443141229926917 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 (443141234121211) 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, 2032757954576 + ... + 2032757954793.

It is an arithmetic number, because the mean of its divisors is an integer number (111801687507675).

Almost surely, 2^{443141234121221} is an apocalyptic number.

It is an amenable number.

443141234121221 is a deficient number, since it is larger than the sum of its proper divisors (4065515909479).

443141234121221 is a wasteful number, since it uses less digits than its factorization.

443141234121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065515909478.

The product of its digits is 36864, while the sum is 35.

Adding to 443141234121221 its reverse (122121432141344), we get a palindrome (565262666262565).

The spelling of 443141234121221 in words is "four hundred forty-three trillion, one hundred forty-one billion, two hundred thirty-four million, one hundred twenty-one thousand, two hundred twenty-one".