2122105 has 8 divisors (see below), whose sum is σ = 2628864. Its totient is φ = 1642800.

The previous prime is 2122103. The next prime is 2122123. The reversal of 2122105 is 5012212.

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

It is not a de Polignac number, because 2122105 - 2¹ = 2122103 is a prime.

It is a Duffinian number.

2122105 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2122103) 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, 6691 + ... + 7000.

It is an arithmetic number, because the mean of its divisors is an integer number (328608).

2^2122105 is an apocalyptic number.

It is an amenable number.

2122105 is a deficient number, since it is larger than the sum of its proper divisors (506759).

2122105 is a wasteful number, since it uses less digits than its factorization.

2122105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13727.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2122105 is about 1456.7446584766. The cubic root of 2122105 is about 128.5056697827.

Adding to 2122105 its reverse (5012212), we get a palindrome (7134317).

The spelling of 2122105 in words is "two million, one hundred twenty-two thousand, one hundred five".