21243214411 has 8 divisors (see below), whose sum is σ = 21935232000. Its totient is φ = 20551618920.

The previous prime is 21243214409. The next prime is 21243214417. The reversal of 21243214411 is 11441234212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21243214411 - 2¹ = 21243214409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21243214417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1591 + ... + 206128.

It is an arithmetic number, because the mean of its divisors is an integer number (2741904000).

Almost surely, 2^21243214411 is an apocalyptic number.

21243214411 is a deficient number, since it is larger than the sum of its proper divisors (692017589).

21243214411 is a wasteful number, since it uses less digits than its factorization.

21243214411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211049.

The product of its digits is 1536, while the sum is 25.

Adding to 21243214411 its reverse (11441234212), we get a palindrome (32684448623).

The spelling of 21243214411 in words is "twenty-one billion, two hundred forty-three million, two hundred fourteen thousand, four hundred eleven".