2120056705812 has 12 divisors (see below), whose sum is σ = 4946798980256. Its totient is φ = 706685568600.

The previous prime is 2120056705771. The next prime is 2120056705901. The reversal of 2120056705812 is 2185076500212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2120056705812² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88335696064 + ... + 88335696087.

Almost surely, 2^{2120056705812} is an apocalyptic number.

It is an amenable number.

2120056705812 is an abundant number, since it is smaller than the sum of its proper divisors (2826742274444).

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

2120056705812 is a wasteful number, since it uses less digits than its factorization.

2120056705812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176671392158 (or 176671392156 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 2120056705812 in words is "two trillion, one hundred twenty billion, fifty-six million, seven hundred five thousand, eight hundred twelve".