2135803121 has 16 divisors (see below), whose sum is σ = 2188742400. Its totient is φ = 2083656960.

The previous prime is 2135803099. The next prime is 2135803123. The reversal of 2135803121 is 1213085312.

It is a cyclic number.

It is not a de Polignac number, because 2135803121 - 2¹⁸ = 2135540977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135803123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3384476 + ... + 3385106.

It is an arithmetic number, because the mean of its divisors is an integer number (136796400).

Almost surely, 2^2135803121 is an apocalyptic number.

It is an amenable number.

2135803121 is a deficient number, since it is larger than the sum of its proper divisors (52939279).

2135803121 is a wasteful number, since it uses less digits than its factorization.

2135803121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 2135803121 is about 46214.7500371905. The cubic root of 2135803121 is about 1287.8157699234.

Adding to 2135803121 its reverse (1213085312), we get a palindrome (3348888433).

The spelling of 2135803121 in words is "two billion, one hundred thirty-five million, eight hundred three thousand, one hundred twenty-one".