21424304140211 has 12 divisors (see below), whose sum is σ = 26005721442192. Its totient is φ = 17565267989808.

The previous prime is 21424304140201. The next prime is 21424304140247. The reversal of 21424304140211 is 11204140342412.

It is not a de Polignac number, because 21424304140211 - 2¹⁸ = 21424303878067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21424304140201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9505014020 + ... + 9505016273.

It is an arithmetic number, because the mean of its divisors is an integer number (2167143453516).

Almost surely, 2^{21424304140211} is an apocalyptic number.

21424304140211 is a deficient number, since it is larger than the sum of its proper divisors (4581417301981).

21424304140211 is a wasteful number, since it uses less digits than its factorization.

21424304140211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19010030330 (or 19010030323 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 21424304140211 its reverse (11204140342412), we get a palindrome (32628444482623).

The spelling of 21424304140211 in words is "twenty-one trillion, four hundred twenty-four billion, three hundred four million, one hundred forty thousand, two hundred eleven".