212100111210 has 256 divisors, whose sum is σ = 594261577728. Its totient is φ = 47981875200.

The previous prime is 212100111203. The next prime is 212100111217. The reversal of 212100111210 is 12111001212.

212100111210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212100111203) and next prime (212100111217).

It is not an unprimeable number, because it can be changed into a prime (212100111217) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 50366005 + ... + 50370215.

It is an arithmetic number, because the mean of its divisors is an integer number (2321334288).

Almost surely, 2^212100111210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212100111210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297130788864).

212100111210 is an abundant number, since it is smaller than the sum of its proper divisors (382161466518).

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

212100111210 is a wasteful number, since it uses less digits than its factorization.

212100111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212100111210 its reverse (12111001212), we get a palindrome (224211112422).

The spelling of 212100111210 in words is "two hundred twelve billion, one hundred million, one hundred eleven thousand, two hundred ten".