211122105 has 8 divisors (see below), whose sum is σ = 337795392. Its totient is φ = 112598448.

The previous prime is 211122101. The next prime is 211122137. The reversal of 211122105 is 501221112.

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

It is not a de Polignac number, because 211122105 - 2² = 211122101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 14074807 = 211122105 / (2 + 1 + 1 + 1 + 2 + 2 + 1 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (211122101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7037389 + ... + 7037418.

It is an arithmetic number, because the mean of its divisors is an integer number (42224424).

Almost surely, 2^211122105 is an apocalyptic number.

It is an amenable number.

211122105 is a deficient number, since it is larger than the sum of its proper divisors (126673287).

211122105 is a wasteful number, since it uses less digits than its factorization.

211122105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14074815.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 211122105 is about 14530.0414658734. The cubic root of 211122105 is about 595.4489984739.

Adding to 211122105 its reverse (501221112), we get a palindrome (712343217).

The spelling of 211122105 in words is "two hundred eleven million, one hundred twenty-two thousand, one hundred five".