21113203330411 has 4 divisors (see below), whose sum is σ = 22355156467512. Its totient is φ = 19871250193312.

The previous prime is 21113203330409. The next prime is 21113203330421. The reversal of 21113203330411 is 11403330231112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21113203330411 - 2¹ = 21113203330409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113203330421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620976568525 + ... + 620976568558.

It is an arithmetic number, because the mean of its divisors is an integer number (5588789116878).

Almost surely, 2^{21113203330411} is an apocalyptic number.

21113203330411 is a deficient number, since it is larger than the sum of its proper divisors (1241953137101).

21113203330411 is a wasteful number, since it uses less digits than its factorization.

21113203330411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241953137100.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21113203330411 its reverse (11403330231112), we get a palindrome (32516533561523).

The spelling of 21113203330411 in words is "twenty-one trillion, one hundred thirteen billion, two hundred three million, three hundred thirty thousand, four hundred eleven".