21113213033333 has 4 divisors (see below), whose sum is σ = 21161306913120. Its totient is φ = 21065119153548.

The previous prime is 21113213033291. The next prime is 21113213033371. The reversal of 21113213033333 is 33333031231112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113213033333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113213033296 and 21113213033305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113213030333) 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 3 ways as a sum of consecutive naturals, for example, 24046939235 + ... + 24046940112.

It is an arithmetic number, because the mean of its divisors is an integer number (5290326728280).

Almost surely, 2^{21113213033333} is an apocalyptic number.

It is an amenable number.

21113213033333 is a deficient number, since it is larger than the sum of its proper divisors (48093879787).

21113213033333 is an equidigital number, since it uses as much as digits as its factorization.

21113213033333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48093879786.

The product of its (nonzero) digits is 8748, while the sum is 29.

Adding to 21113213033333 its reverse (33333031231112), we get a palindrome (54446244264445).

The spelling of 21113213033333 in words is "twenty-one trillion, one hundred thirteen billion, two hundred thirteen million, thirty-three thousand, three hundred thirty-three".