212101105 has 8 divisors (see below), whose sum is σ = 257588352. Its totient is φ = 167636208.

The previous prime is 212101103. The next prime is 212101117. The reversal of 212101105 is 501101212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212101105 - 2¹ = 212101103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255129 + ... + 255958.

It is an arithmetic number, because the mean of its divisors is an integer number (32198544).

Almost surely, 2^212101105 is an apocalyptic number.

It is an amenable number.

212101105 is a deficient number, since it is larger than the sum of its proper divisors (45487247).

212101105 is an equidigital number, since it uses as much as digits as its factorization.

212101105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511175.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 212101105 is about 14563.6913246608. The cubic root of 212101105 is about 596.3679703346.

Adding to 212101105 its reverse (501101212), we get a palindrome (713202317).

The spelling of 212101105 in words is "two hundred twelve million, one hundred one thousand, one hundred five".