21000224311 has 16 divisors (see below), whose sum is σ = 22966732800. Its totient is φ = 19043359200.

The previous prime is 21000224293. The next prime is 21000224327. The reversal of 21000224311 is 11342200012.

It is a cyclic number.

It is not a de Polignac number, because 21000224311 - 2⁵ = 21000224279 is a prime.

It is a super-2 number, since 2×21000224311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000224341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11937850 + ... + 11939608.

It is an arithmetic number, because the mean of its divisors is an integer number (1435420800).

Almost surely, 2^21000224311 is an apocalyptic number.

21000224311 is a deficient number, since it is larger than the sum of its proper divisors (1966508489).

21000224311 is a wasteful number, since it uses less digits than its factorization.

21000224311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21000224311 its reverse (11342200012), we get a palindrome (32342424323).

The spelling of 21000224311 in words is "twenty-one billion, two hundred twenty-four thousand, three hundred eleven".