20020110001220 has 96 divisors (see below), whose sum is σ = 49092877467648. Its totient is φ = 6714940021632.

The previous prime is 20020110001207. The next prime is 20020110001223. The reversal of 20020110001220 is 2210001102002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20020110001223) 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, 13805189 + ... + 15186291.

It is an arithmetic number, because the mean of its divisors is an integer number (511384140288).

Almost surely, 2^{20020110001220} is an apocalyptic number.

20020110001220 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 20020110001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24546438733824).

20020110001220 is an abundant number, since it is smaller than the sum of its proper divisors (29072767466428).

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

20020110001220 is a wasteful number, since it uses less digits than its factorization.

20020110001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383369 (or 1383367 counting only the distinct ones).

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

Adding to 20020110001220 its reverse (2210001102002), we get a palindrome (22230111103222).

The spelling of 20020110001220 in words is "twenty trillion, twenty billion, one hundred ten million, one thousand, two hundred twenty".