2112121202020 has 24 divisors (see below), whose sum is σ = 4436624062584. Its totient is φ = 844625711616.

The previous prime is 2112121201997. The next prime is 2112121202039. The reversal of 2112121202020 is 202021212112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4490876196 + 2107630325824 = 67014^2 + 1451768^2 .

It is a super-2 number, since 2×2112121202020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112121201985 and 2112121202003.

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 7 ways as a sum of consecutive naturals, for example, 13845319 + ... + 13997038.

It is an arithmetic number, because the mean of its divisors is an integer number (184859335941).

Almost surely, 2^{2112121202020} is an apocalyptic number.

2112121202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112121202020 is an abundant number, since it is smaller than the sum of its proper divisors (2324502860564).

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

2112121202020 is a wasteful number, since it uses less digits than its factorization.

2112121202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27846159 (or 27846157 counting only the distinct ones).

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

Adding to 2112121202020 its reverse (202021212112), we get a palindrome (2314142414132).

The spelling of 2112121202020 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred two thousand, twenty".