212552105 has 16 divisors (see below), whose sum is σ = 270409104. Its totient is φ = 159836160.

The previous prime is 212552083. The next prime is 212552111. The reversal of 212552105 is 501255212.

212552105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 51566761 + 160985344 = 7181^2 + 12688^2 .

It is not a de Polignac number, because 212552105 - 2¹⁶ = 212486569 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, 122645 + ... + 124365.

It is an arithmetic number, because the mean of its divisors is an integer number (16900569).

Almost surely, 2^212552105 is an apocalyptic number.

It is an amenable number.

212552105 is a deficient number, since it is larger than the sum of its proper divisors (57856999).

212552105 is a wasteful number, since it uses less digits than its factorization.

212552105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 212552105 is about 14579.1668143279. The cubic root of 212552105 is about 596.7903656576.

The spelling of 212552105 in words is "two hundred twelve million, five hundred fifty-two thousand, one hundred five".