201112102220020 has 24 divisors (see below), whose sum is σ = 422338042400904. Its totient is φ = 80444340366336.

The previous prime is 201112102219939. The next prime is 201112102220063. The reversal of 201112102220020 is 20022201211102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 133706622932964 + 67405479287056 = 11563158^2 + 8210084^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201112102219976 and 201112102220003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27979297 + ... + 34424776.

It is an arithmetic number, because the mean of its divisors is an integer number (17597418433371).

Almost surely, 2^{201112102220020} is an apocalyptic number.

201112102220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201112102220020 is an abundant number, since it is smaller than the sum of its proper divisors (221225940180884).

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

201112102220020 is a wasteful number, since it uses less digits than its factorization.

201112102220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62565219 (or 62565217 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201112102220020 its reverse (20022201211102), we get a palindrome (221134303431122).

The spelling of 201112102220020 in words is "two hundred one trillion, one hundred twelve billion, one hundred two million, two hundred twenty thousand, twenty".