20321230120 has 64 divisors (see below), whose sum is σ = 46572019200. Its totient is φ = 7978087680.

The previous prime is 20321230103. The next prime is 20321230123. The reversal of 20321230120 is 2103212302.

It is a junction number, because it is equal to n+sod(n) for n = 20321230094 and 20321230103.

It is not an unprimeable number, because it can be changed into a prime (20321230123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1160067 + ... + 1177453.

It is an arithmetic number, because the mean of its divisors is an integer number (727687800).

Almost surely, 2^20321230120 is an apocalyptic number.

20321230120 is a gapful number since it is divisible by the number (20) 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 20321230120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23286009600).

20321230120 is an abundant number, since it is smaller than the sum of its proper divisors (26250789080).

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

20321230120 is a wasteful number, since it uses less digits than its factorization.

20321230120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17938 (or 17934 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20321230120 its reverse (2103212302), we get a palindrome (22424442422).

It can be divided in two parts, 203212 and 30120, that added together give a palindrome (233332).

The spelling of 20321230120 in words is "twenty billion, three hundred twenty-one million, two hundred thirty thousand, one hundred twenty".