20101000110220 has 48 divisors (see below), whose sum is σ = 42662903760288. Its totient is φ = 7954593454080.

The previous prime is 20101000110209. The next prime is 20101000110221. The reversal of 20101000110220 is 2201100010102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20101000110197 and 20101000110206.

It is not an unprimeable number, because it can be changed into a prime (20101000110221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3401154 + ... + 7195126.

It is an arithmetic number, because the mean of its divisors is an integer number (888810495006).

Almost surely, 2^{20101000110220} is an apocalyptic number.

20101000110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101000110220 is an abundant number, since it is smaller than the sum of its proper divisors (22561903650068).

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

20101000110220 is a wasteful number, since it uses less digits than its factorization.

20101000110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796810 (or 3796808 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20101000110220 its reverse (2201100010102), we get a palindrome (22302100120322).

The spelling of 20101000110220 in words is "twenty trillion, one hundred one billion, one hundred ten thousand, two hundred twenty".