2121340535 has 16 divisors (see below), whose sum is σ = 2603145600. Its totient is φ = 1658808576.

The previous prime is 2121340493. The next prime is 2121340537. The reversal of 2121340535 is 5350431212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2121340535 - 2⁸ = 2121340279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121340537) 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, 189371 + ... + 200259.

It is an arithmetic number, because the mean of its divisors is an integer number (162696600).

Almost surely, 2^2121340535 is an apocalyptic number.

2121340535 is a deficient number, since it is larger than the sum of its proper divisors (481805065).

2121340535 is a wasteful number, since it uses less digits than its factorization.

2121340535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11770.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2121340535 is about 46058.0127122306. The cubic root of 2121340535 is about 1284.9023701104.

Adding to 2121340535 its reverse (5350431212), we get a palindrome (7471771747).

The spelling of 2121340535 in words is "two billion, one hundred twenty-one million, three hundred forty thousand, five hundred thirty-five".