2021012012120 has 32 divisors (see below), whose sum is σ = 4547777382720. Its totient is φ = 808315852800.

The previous prime is 2021012012081. The next prime is 2021012012137. The reversal of 2021012012120 is 212102101202.

It is a super-3 number, since 3×2021012012120³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021012012095 and 2021012012104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411081 + ... + 3139320.

It is an arithmetic number, because the mean of its divisors is an integer number (142118043210).

Almost surely, 2^{2021012012120} is an apocalyptic number.

2021012012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021012012120 is an abundant number, since it is smaller than the sum of its proper divisors (2526765370600).

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

2021012012120 is a wasteful number, since it uses less digits than its factorization.

2021012012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559515 (or 5559511 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021012012120 its reverse (212102101202), we get a palindrome (2233114113322).

The spelling of 2021012012120 in words is "two trillion, twenty-one billion, twelve million, twelve thousand, one hundred twenty".