210121120120 has 32 divisors (see below), whose sum is σ = 472814496000. Its totient is φ = 84040985728.

The previous prime is 210121120117. The next prime is 210121120159. The reversal of 210121120120 is 21021121012.

210121120120 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 210121120120.

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 7 ways as a sum of consecutive naturals, for example, 234537 + ... + 689383.

It is an arithmetic number, because the mean of its divisors is an integer number (14775453000).

Almost surely, 2^210121120120 is an apocalyptic number.

210121120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210121120120 is an abundant number, since it is smaller than the sum of its proper divisors (262693375880).

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

210121120120 is a wasteful number, since it uses less digits than its factorization.

210121120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466407 (or 466403 counting only the distinct ones).

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

Adding to 210121120120 its reverse (21021121012), we get a palindrome (231142241132).

The spelling of 210121120120 in words is "two hundred ten billion, one hundred twenty-one million, one hundred twenty thousand, one hundred twenty".