212106546205 has 16 divisors (see below), whose sum is σ = 256517304624. Its totient is φ = 168360209920.

The previous prime is 212106546199. The next prime is 212106546229. The reversal of 212106546205 is 502645601212.

It can be written as a sum of positive squares in 8 ways, for example, as 7189174521 + 204917371684 = 84789^2 + 452678^2 .

It is not a de Polignac number, because 212106546205 - 2¹³ = 212106538013 is a prime.

It is a Duffinian number.

It is a congruent 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, 1273035 + ... + 1429975.

It is an arithmetic number, because the mean of its divisors is an integer number (16032331539).

Almost surely, 2^212106546205 is an apocalyptic number.

It is an amenable number.

212106546205 is a deficient number, since it is larger than the sum of its proper divisors (44410758419).

212106546205 is a wasteful number, since it uses less digits than its factorization.

212106546205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159056.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 212106546205 in words is "two hundred twelve billion, one hundred six million, five hundred forty-six thousand, two hundred five".