20130132220 has 72 divisors (see below), whose sum is σ = 48208814640. Its totient is φ = 7001744640.

The previous prime is 20130132203. The next prime is 20130132221. The reversal of 20130132220 is 2223103102.

It is a junction number, because it is equal to n+sod(n) for n = 20130132194 and 20130132203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130132221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29896 + ... + 202864.

It is an arithmetic number, because the mean of its divisors is an integer number (669566870).

Almost surely, 2^20130132220 is an apocalyptic number.

20130132220 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 20130132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24104407320).

20130132220 is an abundant number, since it is smaller than the sum of its proper divisors (28078682420).

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

20130132220 is a wasteful number, since it uses less digits than its factorization.

20130132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173035 (or 173010 counting only the distinct ones).

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

Adding to 20130132220 its reverse (2223103102), we get a palindrome (22353235322).

The spelling of 20130132220 in words is "twenty billion, one hundred thirty million, one hundred thirty-two thousand, two hundred twenty".