21113137335 has 32 divisors (see below), whose sum is σ = 35910749952. Its totient is φ = 10555712000.

The previous prime is 21113137333. The next prime is 21113137343. The reversal of 21113137335 is 53373131112.

It is not a de Polignac number, because 21113137335 - 2¹ = 21113137333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113137333) 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 31 ways as a sum of consecutive naturals, for example, 100929 + ... + 228938.

It is an arithmetic number, because the mean of its divisors is an integer number (1122210936).

Almost surely, 2^21113137335 is an apocalyptic number.

21113137335 is a deficient number, since it is larger than the sum of its proper divisors (14797612617).

21113137335 is a wasteful number, since it uses less digits than its factorization.

21113137335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330143.

The product of its digits is 5670, while the sum is 30.

Adding to 21113137335 its reverse (53373131112), we get a palindrome (74486268447).

The spelling of 21113137335 in words is "twenty-one billion, one hundred thirteen million, one hundred thirty-seven thousand, three hundred thirty-five".