2105105207 has 4 divisors (see below), whose sum is σ = 2105202000. Its totient is φ = 2105008416.

The previous prime is 2105105203. The next prime is 2105105279. The reversal of 2105105207 is 7025015012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2105105207 - 2² = 2105105203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105105201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103 + ... + 64895.

It is an arithmetic number, because the mean of its divisors is an integer number (526300500).

Almost surely, 2^2105105207 is an apocalyptic number.

2105105207 is a deficient number, since it is larger than the sum of its proper divisors (96793).

2105105207 is an equidigital number, since it uses as much as digits as its factorization.

2105105207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96792.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 2105105207 is about 45881.4255118561. The cubic root of 2105105207 is about 1281.6160429394.

The spelling of 2105105207 in words is "two billion, one hundred five million, one hundred five thousand, two hundred seven".