3243543321021 has 16 divisors (see below), whose sum is σ = 4326286077120. Its totient is φ = 2161581534720.

The previous prime is 3243543321001. The next prime is 3243543321023. The reversal of 3243543321021 is 1201233453423.

It is not a de Polignac number, because 3243543321021 - 2⁹ = 3243543320509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243543321023) 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, 182612781 + ... + 182630541.

It is an arithmetic number, because the mean of its divisors is an integer number (270392879820).

Almost surely, 2^{3243543321021} is an apocalyptic number.

It is an amenable number.

3243543321021 is a deficient number, since it is larger than the sum of its proper divisors (1082742756099).

3243543321021 is a wasteful number, since it uses less digits than its factorization.

3243543321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36316.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 3243543321021 its reverse (1201233453423), we get a palindrome (4444776774444).

The spelling of 3243543321021 in words is "three trillion, two hundred forty-three billion, five hundred forty-three million, three hundred twenty-one thousand, twenty-one".