21234232255 has 8 divisors (see below), whose sum is σ = 25483425552. Its totient is φ = 16985821248.

The previous prime is 21234232241. The next prime is 21234232301. The reversal of 21234232255 is 55223243212.

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

It is a cyclic number.

It is not a de Polignac number, because 21234232255 - 2¹⁷ = 21234101183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134097 + ... + 245866.

It is an arithmetic number, because the mean of its divisors is an integer number (3185428194).

Almost surely, 2^21234232255 is an apocalyptic number.

21234232255 is a deficient number, since it is larger than the sum of its proper divisors (4249193297).

21234232255 is a wasteful number, since it uses less digits than its factorization.

21234232255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391145.

The product of its digits is 28800, while the sum is 31.

Adding to 21234232255 its reverse (55223243212), we get a palindrome (76457475467).

The spelling of 21234232255 in words is "twenty-one billion, two hundred thirty-four million, two hundred thirty-two thousand, two hundred fifty-five".