20302021120 has 80 divisors (see below), whose sum is σ = 48713500440. Its totient is φ = 8114765824.

The previous prime is 20302021073. The next prime is 20302021141. The reversal of 20302021120 is 2112020302.

It can be written as a sum of positive squares in 4 ways, for example, as 9786749184 + 10515271936 = 98928^2 + 102544^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 20302021120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5294724 + ... + 5298556.

Almost surely, 2^20302021120 is an apocalyptic number.

20302021120 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 20302021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24356750220).

20302021120 is an abundant number, since it is smaller than the sum of its proper divisors (28411479320).

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

20302021120 is an equidigital number, since it uses as much as digits as its factorization.

20302021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5925 (or 5909 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20302021120 its reverse (2112020302), we get a palindrome (22414041422).

The spelling of 20302021120 in words is "twenty billion, three hundred two million, twenty-one thousand, one hundred twenty".