20321322424 has 32 divisors (see below), whose sum is σ = 42448392000. Its totient is φ = 9055654272.

The previous prime is 20321322421. The next prime is 20321322449. The reversal of 20321322424 is 42422312302.

It is a super-2 number, since 2×20321322424² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321322421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3365904 + ... + 3371935.

It is an arithmetic number, because the mean of its divisors is an integer number (1326512250).

Almost surely, 2^20321322424 is an apocalyptic number.

It is an amenable number.

20321322424 is an abundant number, since it is smaller than the sum of its proper divisors (22127069576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20321322424 is a wasteful number, since it uses less digits than its factorization.

20321322424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737887 (or 6737883 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20321322424 its reverse (42422312302), we get a palindrome (62743634726).

The spelling of 20321322424 in words is "twenty billion, three hundred twenty-one million, three hundred twenty-two thousand, four hundred twenty-four".