2122212020 has 18 divisors (see below), whose sum is σ = 4457077926. Its totient is φ = 848802400.

The previous prime is 2122212013. The next prime is 2122212041. The reversal of 2122212020 is 202122212.

It can be written as a sum of positive squares in 3 ways, for example, as 1322340496 + 799871524 = 36364^2 + 28282^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2122211986 and 2122212004.

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 5 ways as a sum of consecutive naturals, for example, 200870 + ... + 211170.

Almost surely, 2^2122212020 is an apocalyptic number.

2122212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122212020 is an abundant number, since it is smaller than the sum of its proper divisors (2334865906).

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

2122212020 is an frugal number, since it uses more digits than its factorization.

2122212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20611 (or 10308 counting only the distinct ones).

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

The square root of 2122212020 is about 46067.4724724507. The cubic root of 2122212020 is about 1285.0782997199.

Adding to 2122212020 its reverse (202122212), we get a palindrome (2324334232).

The spelling of 2122212020 in words is "two billion, one hundred twenty-two million, two hundred twelve thousand, twenty".