212110202105 has 16 divisors (see below), whose sum is σ = 266343796944. Its totient is φ = 161986855680.

The previous prime is 212110202041. The next prime is 212110202141. The reversal of 212110202105 is 501202011212.

It can be written as a sum of positive squares in 8 ways, for example, as 22226039056 + 189884163049 = 149084^2 + 435757^2 .

It is not a de Polignac number, because 212110202105 - 2⁶ = 212110202041 is a prime.

It is a Duffinian number.

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, 10806626 + ... + 10826235.

It is an arithmetic number, because the mean of its divisors is an integer number (16646487309).

Almost surely, 2^212110202105 is an apocalyptic number.

It is an amenable number.

212110202105 is a deficient number, since it is larger than the sum of its proper divisors (54233594839).

212110202105 is a wasteful number, since it uses less digits than its factorization.

212110202105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21632956.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 212110202105 its reverse (501202011212), we get a palindrome (713312213317).

The spelling of 212110202105 in words is "two hundred twelve billion, one hundred ten million, two hundred two thousand, one hundred five".