321242442021 has 32 divisors (see below), whose sum is σ = 476862512000. Its totient is φ = 213735521664.

The previous prime is 321242441987. The next prime is 321242442089. The reversal of 321242442021 is 120244242123.

It is a happy number.

321242442021 is a `hidden beast` number, since 3 + 212 + 4 + 2 + 4 + 420 + 21 = 666.

It is not a de Polignac number, because 321242442021 - 2¹³ = 321242433829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321242442091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38564985 + ... + 38573313.

It is an arithmetic number, because the mean of its divisors is an integer number (14901953500).

Almost surely, 2^321242442021 is an apocalyptic number.

It is an amenable number.

321242442021 is a deficient number, since it is larger than the sum of its proper divisors (155620069979).

321242442021 is a wasteful number, since it uses less digits than its factorization.

321242442021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010 (or 11004 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 321242442021 its reverse (120244242123), we get a palindrome (441486684144).

The spelling of 321242442021 in words is "three hundred twenty-one billion, two hundred forty-two million, four hundred forty-two thousand, twenty-one".