21424110223233 has 16 divisors (see below), whose sum is σ = 28703389083200. Its totient is φ = 14213843012160.

The previous prime is 21424110223097. The next prime is 21424110223259. The reversal of 21424110223233 is 33232201142412.

It is a happy number.

It is not a de Polignac number, because 21424110223233 - 2⁹ = 21424110222721 is a prime.

It is a Duffinian number.

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 21424110223233.

It is not an unprimeable number, because it can be changed into a prime (21424110223333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5658838 + ... + 8652783.

It is an arithmetic number, because the mean of its divisors is an integer number (1793961817700).

Almost surely, 2^{21424110223233} is an apocalyptic number.

It is an amenable number.

21424110223233 is a deficient number, since it is larger than the sum of its proper divisors (7279278859967).

21424110223233 is a wasteful number, since it uses less digits than its factorization.

21424110223233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14314032.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21424110223233 its reverse (33232201142412), we get a palindrome (54656311365645).

The spelling of 21424110223233 in words is "twenty-one trillion, four hundred twenty-four billion, one hundred ten million, two hundred twenty-three thousand, two hundred thirty-three".