2120012420020 has 96 divisors (see below), whose sum is σ = 5108019065856. Its totient is φ = 731968972800.

The previous prime is 2120012419991. The next prime is 2120012420021. The reversal of 2120012420020 is 200242100212.

It is a super-2 number, since 2×2120012420020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120012419976 and 2120012420003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120012420021) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2571109 + ... + 3294028.

It is an arithmetic number, because the mean of its divisors is an integer number (53208531936).

Almost surely, 2^{2120012420020} is an apocalyptic number.

2120012420020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120012420020 is an abundant number, since it is smaller than the sum of its proper divisors (2988006645836).

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

2120012420020 is a wasteful number, since it uses less digits than its factorization.

2120012420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5865241 (or 5865239 counting only the distinct ones).

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

Adding to 2120012420020 its reverse (200242100212), we get a palindrome (2320254520232).

The spelling of 2120012420020 in words is "two trillion, one hundred twenty billion, twelve million, four hundred twenty thousand, twenty".