210120031212 has 192 divisors, whose sum is σ = 639420816384. Its totient is φ = 52115374080.

The previous prime is 210120031153. The next prime is 210120031237. The reversal of 210120031212 is 212130021012.

210120031212 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 210120031191 and 210120031200.

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 63 ways as a sum of consecutive naturals, for example, 28417788 + ... + 28425180.

It is an arithmetic number, because the mean of its divisors is an integer number (3330316752).

Almost surely, 2^210120031212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210120031212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319710408192).

210120031212 is an abundant number, since it is smaller than the sum of its proper divisors (429300785172).

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

210120031212 is a wasteful number, since it uses less digits than its factorization.

210120031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8968 (or 8966 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 210120031212 its reverse (212130021012), we get a palindrome (422250052224).

The spelling of 210120031212 in words is "two hundred ten billion, one hundred twenty million, thirty-one thousand, two hundred twelve".