2105102135 has 4 divisors (see below), whose sum is σ = 2526122568. Its totient is φ = 1684081704.

The previous prime is 2105102119. The next prime is 2105102171. The reversal of 2105102135 is 5312015012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2105102135 - 2⁴ = 2105102119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210510209 + ... + 210510218.

It is an arithmetic number, because the mean of its divisors is an integer number (631530642).

Almost surely, 2^2105102135 is an apocalyptic number.

2105102135 is a deficient number, since it is larger than the sum of its proper divisors (421020433).

2105102135 is an equidigital number, since it uses as much as digits as its factorization.

2105102135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421020432.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2105102135 is about 45881.3920342441. The cubic root of 2105102135 is about 1281.6154195142.

Adding to 2105102135 its reverse (5312015012), we get a palindrome (7417117147).

The spelling of 2105102135 in words is "two billion, one hundred five million, one hundred two thousand, one hundred thirty-five".