21332231230233 has 128 divisors (see below), whose sum is σ = 36484833447936. Its totient is φ = 10767408537600.

The previous prime is 21332231230153. The next prime is 21332231230279. The reversal of 21332231230233 is 33203213223312.

It is not a de Polignac number, because 21332231230233 - 2⁸ = 21332231229977 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21332231230233.

It is not an unprimeable number, because it can be changed into a prime (21332231230283) 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 127 ways as a sum of consecutive naturals, for example, 332862753 + ... + 332926833.

It is an arithmetic number, because the mean of its divisors is an integer number (285037761312).

Almost surely, 2^{21332231230233} is an apocalyptic number.

It is an amenable number.

21332231230233 is a deficient number, since it is larger than the sum of its proper divisors (15152602217703).

21332231230233 is a wasteful number, since it uses less digits than its factorization.

21332231230233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64463.

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 21332231230233 its reverse (33203213223312), we get a palindrome (54535444453545).

The spelling of 21332231230233 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred thirty-one million, two hundred thirty thousand, two hundred thirty-three".