21113122111333 has 8 divisors (see below), whose sum is σ = 24129413182400. Its totient is φ = 18096863732640.

The previous prime is 21113122111307. The next prime is 21113122111363. The reversal of 21113122111333 is 33311122131112.

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

It is not a de Polignac number, because 21113122111333 - 2¹³ = 21113122103141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113122111298 and 21113122111307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113122111363) 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, 6773223 + ... + 9386308.

It is an arithmetic number, because the mean of its divisors is an integer number (3016176647800).

Almost surely, 2^{21113122111333} is an apocalyptic number.

It is an amenable number.

21113122111333 is a deficient number, since it is larger than the sum of its proper divisors (3016291071067).

21113122111333 is a wasteful number, since it uses less digits than its factorization.

21113122111333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16346187.

The product of its digits is 648, while the sum is 25.

Adding to 21113122111333 its reverse (33311122131112), we get a palindrome (54424244242445).

The spelling of 21113122111333 in words is "twenty-one trillion, one hundred thirteen billion, one hundred twenty-two million, one hundred eleven thousand, three hundred thirty-three".