21214024305223 has 4 divisors (see below), whose sum is σ = 21215208075408. Its totient is φ = 21212840535040.

The previous prime is 21214024305211. The next prime is 21214024305241. The reversal of 21214024305223 is 32250342041212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21214024305223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214024305263) 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 3 ways as a sum of consecutive naturals, for example, 591858211 + ... + 591894052.

It is an arithmetic number, because the mean of its divisors is an integer number (5303802018852).

Almost surely, 2^{21214024305223} is an apocalyptic number.

21214024305223 is a deficient number, since it is larger than the sum of its proper divisors (1183770185).

21214024305223 is a wasteful number, since it uses less digits than its factorization.

21214024305223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183770184.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 21214024305223 its reverse (32250342041212), we get a palindrome (53464366346435).

The spelling of 21214024305223 in words is "twenty-one trillion, two hundred fourteen billion, twenty-four million, three hundred five thousand, two hundred twenty-three".