212101100212 has 12 divisors (see below), whose sum is σ = 371478949380. Its totient is φ = 105964257536.

The previous prime is 212101100209. The next prime is 212101100227. The reversal of 212101100212 is 212001101212.

212101100212 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 can be written as a sum of positive squares in 2 ways, for example, as 183975797776 + 28125302436 = 428924^2 + 167706^2 .

It is a super-2 number, since 2×212101100212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212101100192 and 212101100201.

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, 21567613 + ... + 21577444.

It is an arithmetic number, because the mean of its divisors is an integer number (30956579115).

Almost surely, 2^212101100212 is an apocalyptic number.

It is an amenable number.

212101100212 is a deficient number, since it is larger than the sum of its proper divisors (159377849168).

212101100212 is a wasteful number, since it uses less digits than its factorization.

212101100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43146290 (or 43146288 counting only the distinct ones).

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

Adding to 212101100212 its reverse (212001101212), we get a palindrome (424102201424).

The spelling of 212101100212 in words is "two hundred twelve billion, one hundred one million, one hundred thousand, two hundred twelve".