211075105 has 8 divisors (see below), whose sum is σ = 253971432. Its totient is φ = 168405888.

The previous prime is 211075103. The next prime is 211075133. The reversal of 211075105 is 501570112.

It can be written as a sum of positive squares in 4 ways, for example, as 12321 + 211062784 = 111^2 + 14528^2 .

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 211075105 - 2¹ = 211075103 is a prime.

It is a super-2 number, since 2×211075105² = 89105399901522050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211075103) 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, 54724 + ... + 58453.

It is an arithmetic number, because the mean of its divisors is an integer number (31746429).

Almost surely, 2^211075105 is an apocalyptic number.

It is an amenable number.

211075105 is a deficient number, since it is larger than the sum of its proper divisors (42896327).

211075105 is a wasteful number, since it uses less digits than its factorization.

211075105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113555.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 211075105 is about 14528.4240370386. The cubic root of 211075105 is about 595.4048089120.

The spelling of 211075105 in words is "two hundred eleven million, seventy-five thousand, one hundred five".