201110220020 has 12 divisors (see below), whose sum is σ = 422331462084. Its totient is φ = 80444088000.

The previous prime is 201110220011. The next prime is 201110220049. The reversal of 201110220020 is 20022011102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42217099024 + 158893120996 = 205468^2 + 398614^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201110219983 and 201110220010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027755481 + ... + 5027755520.

It is an arithmetic number, because the mean of its divisors is an integer number (35194288507).

Almost surely, 2^201110220020 is an apocalyptic number.

201110220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201110220020 is an abundant number, since it is smaller than the sum of its proper divisors (221221242064).

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

201110220020 is a wasteful number, since it uses less digits than its factorization.

201110220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055511010 (or 10055511008 counting only the distinct ones).

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

Adding to 201110220020 its reverse (20022011102), we get a palindrome (221132231122).

The spelling of 201110220020 in words is "two hundred one billion, one hundred ten million, two hundred twenty thousand, twenty".