21213323020011 has 8 divisors (see below), whose sum is σ = 29196831683584. Its totient is φ = 13686014851560.

The previous prime is 21213323020003. The next prime is 21213323020033. The reversal of 21213323020011 is 11002032331212.

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

It is not a de Polignac number, because 21213323020011 - 2³ = 21213323020003 is a prime.

It is a super-2 number, since 2×21213323020011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21213323020011.

It is not an unprimeable number, because it can be changed into a prime (21213323027011) 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 7 ways as a sum of consecutive naturals, for example, 114050123671 + ... + 114050123856.

It is an arithmetic number, because the mean of its divisors is an integer number (3649603960448).

Almost surely, 2^{21213323020011} is an apocalyptic number.

21213323020011 is a deficient number, since it is larger than the sum of its proper divisors (7983508663573).

21213323020011 is a wasteful number, since it uses less digits than its factorization.

21213323020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228100247561.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21213323020011 its reverse (11002032331212), we get a palindrome (32215355351223).

The spelling of 21213323020011 in words is "twenty-one trillion, two hundred thirteen billion, three hundred twenty-three million, twenty thousand, eleven".