212221022020 has 48 divisors (see below), whose sum is σ = 525760478208. Its totient is φ = 70414346880.

The previous prime is 212221022017. The next prime is 212221022023. The reversal of 212221022020 is 20220122212.

212221022020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212221022017) and next prime (212221022023).

It is a junction number, because it is equal to n+sod(n) for n = 212221021985 and 212221022003.

It is not an unprimeable number, because it can be changed into a prime (212221022023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24445087 + ... + 24453766.

It is an arithmetic number, because the mean of its divisors is an integer number (10953343296).

Almost surely, 2^212221022020 is an apocalyptic number.

212221022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221022020 is an abundant number, since it is smaller than the sum of its proper divisors (313539456188).

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

212221022020 is a wasteful number, since it uses less digits than its factorization.

212221022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48898900 (or 48898898 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212221022020 its reverse (20220122212), we get a palindrome (232441144232).

The spelling of 212221022020 in words is "two hundred twelve billion, two hundred twenty-one million, twenty-two thousand, twenty".