21424012433223 has 32 divisors (see below), whose sum is σ = 28952584609536. Its totient is φ = 14090074426368.

The previous prime is 21424012433207. The next prime is 21424012433227. The reversal of 21424012433223 is 32233421042412.

It is a happy number.

It is not a de Polignac number, because 21424012433223 - 2⁴ = 21424012433207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21424012433227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117554136 + ... + 117736242.

It is an arithmetic number, because the mean of its divisors is an integer number (904768269048).

Almost surely, 2^{21424012433223} is an apocalyptic number.

21424012433223 is a deficient number, since it is larger than the sum of its proper divisors (7528572176313).

21424012433223 is a wasteful number, since it uses less digits than its factorization.

21424012433223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183503.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21424012433223 its reverse (32233421042412), we get a palindrome (53657433475635).

The spelling of 21424012433223 in words is "twenty-one trillion, four hundred twenty-four billion, twelve million, four hundred thirty-three thousand, two hundred twenty-three".