21233310011 has 4 divisors (see below), whose sum is σ = 21333942024. Its totient is φ = 21132678000.

The previous prime is 21233309971. The next prime is 21233310047. The reversal of 21233310011 is 11001333212.

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 21233310011 - 2³⁴ = 4053440827 is a prime.

It is a super-3 number, since 3×21233310011³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233310211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50315690 + ... + 50316111.

It is an arithmetic number, because the mean of its divisors is an integer number (5333485506).

Almost surely, 2^21233310011 is an apocalyptic number.

21233310011 is a deficient number, since it is larger than the sum of its proper divisors (100632013).

21233310011 is a wasteful number, since it uses less digits than its factorization.

21233310011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100632012.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21233310011 its reverse (11001333212), we get a palindrome (32234643223).

The spelling of 21233310011 in words is "twenty-one billion, two hundred thirty-three million, three hundred ten thousand, eleven".