20120110220 has 96 divisors (see below), whose sum is σ = 49467264000. Its totient is φ = 6730262784.

The previous prime is 20120110193. The next prime is 20120110237. The reversal of 20120110220 is 2201102102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8420786 + ... + 8423174.

It is an arithmetic number, because the mean of its divisors is an integer number (515284000).

Almost surely, 2^20120110220 is an apocalyptic number.

20120110220 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 20120110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24733632000).

20120110220 is an abundant number, since it is smaller than the sum of its proper divisors (29347153780).

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

20120110220 is a wasteful number, since it uses less digits than its factorization.

20120110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847 (or 3845 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20120110220 its reverse (2201102102), we get a palindrome (22321212322).

The spelling of 20120110220 in words is "twenty billion, one hundred twenty million, one hundred ten thousand, two hundred twenty".