21134311235 has 32 divisors (see below), whose sum is σ = 26071200000. Its totient is φ = 16441312896.

The previous prime is 21134311229. The next prime is 21134311267. The reversal of 21134311235 is 53211343112.

It is not a de Polignac number, because 21134311235 - 2³⁰ = 20060569411 is a prime.

It is a super-2 number, since 2×21134311235² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12438416 + ... + 12440114.

It is an arithmetic number, because the mean of its divisors is an integer number (814725000).

Almost surely, 2^21134311235 is an apocalyptic number.

21134311235 is a deficient number, since it is larger than the sum of its proper divisors (4936888765).

21134311235 is a wasteful number, since it uses less digits than its factorization.

21134311235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195.

The product of its digits is 2160, while the sum is 26.

Adding to 21134311235 its reverse (53211343112), we get a palindrome (74345654347).

The spelling of 21134311235 in words is "twenty-one billion, one hundred thirty-four million, three hundred eleven thousand, two hundred thirty-five".