2021220202220 has 72 divisors (see below), whose sum is σ = 4283814828384. Its totient is φ = 801072695808.

The previous prime is 2021220202213. The next prime is 2021220202231. The reversal of 2021220202220 is 222020221202.

It is a super-2 number, since 2×2021220202220² (a number of 25 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 179069417 + ... + 179080703.

It is an arithmetic number, because the mean of its divisors is an integer number (59497428172).

Almost surely, 2^{2021220202220} is an apocalyptic number.

2021220202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021220202220 is an abundant number, since it is smaller than the sum of its proper divisors (2262594626164).

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

2021220202220 is a wasteful number, since it uses less digits than its factorization.

2021220202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11959 (or 11794 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 2021220202220 its reverse (222020221202), we get a palindrome (2243240423422).

The spelling of 2021220202220 in words is "two trillion, twenty-one billion, two hundred twenty million, two hundred two thousand, two hundred twenty".