201020202111220 has 48 divisors (see below), whose sum is σ = 422756024418000. Its totient is φ = 80291210854400.

The previous prime is 201020202111133. The next prime is 201020202111257. The reversal of 201020202111220 is 22111202020102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 17618133180816 + 183402068930404 = 4197396^2 + 13542602^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201020202111194 and 201020202111203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582344436 + ... + 582689524.

It is an arithmetic number, because the mean of its divisors is an integer number (8807417175375).

Almost surely, 2^{201020202111220} is an apocalyptic number.

201020202111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020202111220 is an abundant number, since it is smaller than the sum of its proper divisors (221735822306780).

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

201020202111220 is a wasteful number, since it uses less digits than its factorization.

201020202111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387348 (or 387346 counting only the distinct ones).

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

Adding to 201020202111220 its reverse (22111202020102), we get a palindrome (223131404131322).

The spelling of 201020202111220 in words is "two hundred one trillion, twenty billion, two hundred two million, one hundred eleven thousand, two hundred twenty".