201220110212020 has 12 divisors (see below), whose sum is σ = 422562231445284. Its totient is φ = 80488044084800.

The previous prime is 201220110211993. The next prime is 201220110212057. The reversal of 201220110212020 is 20212011022102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42044694019344 + 159175416192676 = 6484188^2 + 12616474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201220110211985 and 201220110212003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030502755281 + ... + 5030502755320.

It is an arithmetic number, because the mean of its divisors is an integer number (35213519287107).

Almost surely, 2^{201220110212020} is an apocalyptic number.

201220110212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220110212020 is an abundant number, since it is smaller than the sum of its proper divisors (221342121233264).

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

201220110212020 is a wasteful number, since it uses less digits than its factorization.

201220110212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10061005510610 (or 10061005510608 counting only the distinct ones).

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

Adding to 201220110212020 its reverse (20212011022102), we get a palindrome (221432121234122).

The spelling of 201220110212020 in words is "two hundred one trillion, two hundred twenty billion, one hundred ten million, two hundred twelve thousand, twenty".