211121020120 has 16 divisors (see below), whose sum is σ = 475022295360. Its totient is φ = 84448408032.

The previous prime is 211121020109. The next prime is 211121020157. The reversal of 211121020120 is 21020121112.

211121020120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 211121020120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639012712 + ... + 2639012791.

It is an arithmetic number, because the mean of its divisors is an integer number (29688893460).

Almost surely, 2^211121020120 is an apocalyptic number.

211121020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121020120 is an abundant number, since it is smaller than the sum of its proper divisors (263901275240).

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

211121020120 is a wasteful number, since it uses less digits than its factorization.

211121020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278025514 (or 5278025510 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211121020120 its reverse (21020121112), we get a palindrome (232141141232).

The spelling of 211121020120 in words is "two hundred eleven billion, one hundred twenty-one million, twenty thousand, one hundred twenty".