202220011220 has 24 divisors (see below), whose sum is σ = 430479314664. Its totient is φ = 79779949056.

The previous prime is 202220011219. The next prime is 202220011261. The reversal of 202220011220 is 22110022202.

202220011220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 81980287684 + 120239723536 = 286322^2 + 346756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202220011195 and 202220011204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69251969 + ... + 69254888.

It is an arithmetic number, because the mean of its divisors is an integer number (17936638111).

Almost surely, 2^202220011220 is an apocalyptic number.

202220011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202220011220 is an abundant number, since it is smaller than the sum of its proper divisors (228259303444).

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

202220011220 is a wasteful number, since it uses less digits than its factorization.

202220011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138506939 (or 138506937 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202220011220 its reverse (22110022202), we get a palindrome (224330033422).

The spelling of 202220011220 in words is "two hundred two billion, two hundred twenty million, eleven thousand, two hundred twenty".