21423004211311 has 8 divisors (see below), whose sum is σ = 21563949715200. Its totient is φ = 21282115584288.

The previous prime is 21423004211269. The next prime is 21423004211363. The reversal of 21423004211311 is 11311240032412.

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 21423004211311 - 2¹¹ = 21423004209263 is a prime.

It is a super-2 number, since 2×21423004211311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21423004211381) 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, 13463296 + ... + 14970181.

It is an arithmetic number, because the mean of its divisors is an integer number (2695493714400).

Almost surely, 2^{21423004211311} is an apocalyptic number.

21423004211311 is a deficient number, since it is larger than the sum of its proper divisors (140945503889).

21423004211311 is a wasteful number, since it uses less digits than its factorization.

21423004211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28438433.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21423004211311 its reverse (11311240032412), we get a palindrome (32734244243723).

The spelling of 21423004211311 in words is "twenty-one trillion, four hundred twenty-three billion, four million, two hundred eleven thousand, three hundred eleven".