324400213432021 has 4 divisors (see below), whose sum is σ = 331944404442112. Its totient is φ = 316856022421932.

The previous prime is 324400213431979. The next prime is 324400213432027. The reversal of 324400213432021 is 120234312004423.

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 324400213432021 - 2⁹ = 324400213431509 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 (324400213432027) 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, 3772095504981 + ... + 3772095505066.

It is an arithmetic number, because the mean of its divisors is an integer number (82986101110528).

Almost surely, 2^{324400213432021} is an apocalyptic number.

It is an amenable number.

324400213432021 is a deficient number, since it is larger than the sum of its proper divisors (7544191010091).

324400213432021 is an equidigital number, since it uses as much as digits as its factorization.

324400213432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544191010090.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 324400213432021 its reverse (120234312004423), we get a palindrome (444634525436444).

The spelling of 324400213432021 in words is "three hundred twenty-four trillion, four hundred billion, two hundred thirteen million, four hundred thirty-two thousand, twenty-one".