212100112111210 has 32 divisors (see below), whose sum is σ = 385745085245520. Its totient is φ = 83959091177472.

The previous prime is 212100112111189. The next prime is 212100112111241. The reversal of 212100112111210 is 12111211001212.

It can be written as a sum of positive squares in 8 ways, for example, as 29600465678161 + 182499646433049 = 5440631^2 + 13509243^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4694992 + ... + 21124468.

Almost surely, 2^{212100112111210} is an apocalyptic number.

212100112111210 is a deficient number, since it is larger than the sum of its proper divisors (173644973134310).

212100112111210 is a wasteful number, since it uses less digits than its factorization.

212100112111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16442890.

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

Adding to 212100112111210 its reverse (12111211001212), we get a palindrome (224211323112422).

The spelling of 212100112111210 in words is "two hundred twelve trillion, one hundred billion, one hundred twelve million, one hundred eleven thousand, two hundred ten".