243024132122021 has 4 divisors (see below), whose sum is σ = 243275449736352. Its totient is φ = 242772814507692.

The previous prime is 243024132122003. The next prime is 243024132122053. The reversal of 243024132122021 is 120221231420342.

243024132122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243024132122021 - 2¹⁸ = 243024131859877 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 (243024132122521) 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, 125658805715 + ... + 125658807648.

It is an arithmetic number, because the mean of its divisors is an integer number (60818862434088).

Almost surely, 2^{243024132122021} is an apocalyptic number.

It is an amenable number.

243024132122021 is a deficient number, since it is larger than the sum of its proper divisors (251317614331).

243024132122021 is an equidigital number, since it uses as much as digits as its factorization.

243024132122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251317614330.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 243024132122021 its reverse (120221231420342), we get a palindrome (363245363542363).

The spelling of 243024132122021 in words is "two hundred forty-three trillion, twenty-four billion, one hundred thirty-two million, one hundred twenty-two thousand, twenty-one".