2101210030120 has 32 divisors (see below), whose sum is σ = 4890747486600. Its totient is φ = 811501804288.

The previous prime is 2101210030063. The next prime is 2101210030121. The reversal of 2101210030120 is 210300121012.

It can be written as a sum of positive squares in 4 ways, for example, as 1550269029604 + 550941000516 = 1245098^2 + 742254^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2101210030120.

It is not an unprimeable number, because it can be changed into a prime (2101210030121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905692819 + ... + 905695138.

Almost surely, 2^{2101210030120} is an apocalyptic number.

2101210030120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101210030120 is an abundant number, since it is smaller than the sum of its proper divisors (2789537456480).

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

2101210030120 is a wasteful number, since it uses less digits than its factorization.

2101210030120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811387997 (or 1811387993 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2101210030120 its reverse (210300121012), we get a palindrome (2311510151132).

The spelling of 2101210030120 in words is "two trillion, one hundred one billion, two hundred ten million, thirty thousand, one hundred twenty".