20320202120 has 128 divisors (see below), whose sum is σ = 48160189440. Its totient is φ = 7708646400.

The previous prime is 20320202101. The next prime is 20320202129. The reversal of 20320202120 is 2120202302.

It is a super-2 number, since 2×20320202120² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20320202095 and 20320202104.

It is not an unprimeable number, because it can be changed into a prime (20320202129) 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, 9206057 + ... + 9208263.

It is an arithmetic number, because the mean of its divisors is an integer number (376251480).

Almost surely, 2^20320202120 is an apocalyptic number.

20320202120 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 20320202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24080094720).

20320202120 is an abundant number, since it is smaller than the sum of its proper divisors (27839987320).

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

20320202120 is a wasteful number, since it uses less digits than its factorization.

20320202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415 (or 2411 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20320202120 its reverse (2120202302), we get a palindrome (22440404422).

The spelling of 20320202120 in words is "twenty billion, three hundred twenty million, two hundred two thousand, one hundred twenty".