2101215135 has 64 divisors (see below), whose sum is σ = 3512678400. Its totient is φ = 1071851520.

The previous prime is 2101215107. The next prime is 2101215139. The reversal of 2101215135 is 5315121012.

It is not a de Polignac number, because 2101215135 - 2¹⁴ = 2101198751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101215139) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8718615 + ... + 8718855.

It is an arithmetic number, because the mean of its divisors is an integer number (54885600).

Almost surely, 2^2101215135 is an apocalyptic number.

2101215135 is a deficient number, since it is larger than the sum of its proper divisors (1411463265).

2101215135 is a wasteful number, since it uses less digits than its factorization.

2101215135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 2101215135 is about 45839.0132419973. The cubic root of 2101215135 is about 1280.8261136425.

Adding to 2101215135 its reverse (5315121012), we get a palindrome (7416336147).

The spelling of 2101215135 in words is "two billion, one hundred one million, two hundred fifteen thousand, one hundred thirty-five".