2100106 has 4 divisors (see below), whose sum is σ = 3150162.
Its totient is φ = 1050052.
The previous prime is 2100097. The next prime is 2100113. The reversal of 2100106 is 6010012.
Adding to 2100106 its reverse (6010012), we get a palindrome (8110118).
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., 1729225 + 370881 = 1315^2 + 609^2
It is a super-2 number, since 2×21001062 = 8820890422472, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 2100092 and 2100101.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525025 + ... + 525028.
22100106 is an apocalyptic number.
2100106 is a deficient number, since it is larger than the sum of its proper divisors (1050056).
2100106 is a wasteful number, since it uses less digits than its factorization.
2100106 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1050055.
The product of its (nonzero) digits is 12, while the sum is 10.
The square root of 2100106 is about 1449.1742476321.
The cubic root of 2100106 is about 128.0600710878.
The spelling of 2100106 in words is "two million, one hundred thousand, one hundred six".