20211324144 has 160 divisors (see below), whose sum is σ = 58496256000. Its totient is φ = 5961434880.

The previous prime is 20211324143. The next prime is 20211324149. The reversal of 20211324144 is 44142311202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211324143) 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, 3205507 + ... + 3211805.

It is an arithmetic number, because the mean of its divisors is an integer number (365601600).

Almost surely, 2^20211324144 is an apocalyptic number.

20211324144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20211324144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29248128000).

20211324144 is an abundant number, since it is smaller than the sum of its proper divisors (38284931856).

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

20211324144 is a wasteful number, since it uses less digits than its factorization.

20211324144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483 (or 6477 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20211324144 its reverse (44142311202), we get a palindrome (64353635346).

The spelling of 20211324144 in words is "twenty billion, two hundred eleven million, three hundred twenty-four thousand, one hundred forty-four".