21232001335 has 48 divisors (see below), whose sum is σ = 27653244480. Its totient is φ = 15593907200.

The previous prime is 21232001303. The next prime is 21232001359. The reversal of 21232001335 is 53310023212.

It is not a de Polignac number, because 21232001335 - 2⁵ = 21232001303 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59141886 + ... + 59142244.

It is an arithmetic number, because the mean of its divisors is an integer number (576109260).

Almost surely, 2^21232001335 is an apocalyptic number.

21232001335 is a deficient number, since it is larger than the sum of its proper divisors (6421243145).

21232001335 is a wasteful number, since it uses less digits than its factorization.

21232001335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 21232001335 its reverse (53310023212), we get a palindrome (74542024547).

The spelling of 21232001335 in words is "twenty-one billion, two hundred thirty-two million, one thousand, three hundred thirty-five".