2135522135 has 4 divisors (see below), whose sum is σ = 2562626568. Its totient is φ = 1708417704.

The previous prime is 2135522131. The next prime is 2135522183. The reversal of 2135522135 is 5312255312.

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 2135522135 - 2² = 2135522131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2135522098 and 2135522107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135522131) 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, 213552209 + ... + 213552218.

It is an arithmetic number, because the mean of its divisors is an integer number (640656642).

Almost surely, 2^2135522135 is an apocalyptic number.

2135522135 is a deficient number, since it is larger than the sum of its proper divisors (427104433).

2135522135 is an equidigital number, since it uses as much as digits as its factorization.

2135522135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427104432.

The product of its digits is 9000, while the sum is 29.

The square root of 2135522135 is about 46211.7099337387. The cubic root of 2135522135 is about 1287.7592924843.

Adding to 2135522135 its reverse (5312255312), we get a palindrome (7447777447).

The spelling of 2135522135 in words is "two billion, one hundred thirty-five million, five hundred twenty-two thousand, one hundred thirty-five".