2120100002120 has 32 divisors (see below), whose sum is σ = 4790698094520. Its totient is φ = 844400340480.

The previous prime is 2120100002081. The next prime is 2120100002143. The reversal of 2120100002120 is 212000010212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1945260615076 + 174839387044 = 1394726^2 + 418138^2 .

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, 113729951 + ... + 113748590.

Almost surely, 2^{2120100002120} is an apocalyptic number.

2120100002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120100002120 is an abundant number, since it is smaller than the sum of its proper divisors (2670598092400).

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

2120100002120 is a wasteful number, since it uses less digits than its factorization.

2120100002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227478785 (or 227478781 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2120100002120 its reverse (212000010212), we get a palindrome (2332100012332).

The spelling of 2120100002120 in words is "two trillion, one hundred twenty billion, one hundred million, two thousand, one hundred twenty".