21324211311 has 8 divisors (see below), whose sum is σ = 30619380400. Its totient is φ = 13122591552.

The previous prime is 21324211291. The next prime is 21324211373. The reversal of 21324211311 is 11311242312.

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

It is not a de Polignac number, because 21324211311 - 2⁶ = 21324211247 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 (21324211411) 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 7 ways as a sum of consecutive naturals, for example, 273387286 + ... + 273387363.

It is an arithmetic number, because the mean of its divisors is an integer number (3827422550).

Almost surely, 2^21324211311 is an apocalyptic number.

21324211311 is a deficient number, since it is larger than the sum of its proper divisors (9295169089).

21324211311 is a wasteful number, since it uses less digits than its factorization.

21324211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546774665.

The product of its digits is 288, while the sum is 21.

Adding to 21324211311 its reverse (11311242312), we get a palindrome (32635453623).

The spelling of 21324211311 in words is "twenty-one billion, three hundred twenty-four million, two hundred eleven thousand, three hundred eleven".