211320106 has 4 divisors (see below), whose sum is σ = 316980162. Its totient is φ = 105660052.

The previous prime is 211320091. The next prime is 211320107. The reversal of 211320106 is 601023112.

211320106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 145564225 + 65755881 = 12065^2 + 8109^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211320106.

It is not an unprimeable number, because it can be changed into a prime (211320107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52830025 + ... + 52830028.

Almost surely, 2^211320106 is an apocalyptic number.

211320106 is a deficient number, since it is larger than the sum of its proper divisors (105660056).

211320106 is a wasteful number, since it uses less digits than its factorization.

211320106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105660055.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 211320106 is about 14536.8533734093. The cubic root of 211320106 is about 595.6350877182.

Adding to 211320106 its reverse (601023112), we get a palindrome (812343218).

The spelling of 211320106 in words is "two hundred eleven million, three hundred twenty thousand, one hundred six".