21115230335 has 8 divisors (see below), whose sum is σ = 25490003616. Its totient is φ = 16791032800.

The previous prime is 21115230313. The next prime is 21115230349. The reversal of 21115230335 is 53303251112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21115230335 - 2³⁴ = 3935361151 is a prime.

It is a super-3 number, since 3×21115230335³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12643016 + ... + 12644685.

It is an arithmetic number, because the mean of its divisors is an integer number (3186250452).

Almost surely, 2^21115230335 is an apocalyptic number.

21115230335 is a deficient number, since it is larger than the sum of its proper divisors (4374773281).

21115230335 is a wasteful number, since it uses less digits than its factorization.

21115230335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25287873.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 21115230335 its reverse (53303251112), we get a palindrome (74418481447).

The spelling of 21115230335 in words is "twenty-one billion, one hundred fifteen million, two hundred thirty thousand, three hundred thirty-five".