21330213011 has 8 divisors (see below), whose sum is σ = 21538368384. Its totient is φ = 21122398080.

The previous prime is 21330213001. The next prime is 21330213019. The reversal of 21330213011 is 11031203312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21330213011 is a prime.

It is a super-2 number, since 2×21330213011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330213019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41726 + ... + 210716.

It is an arithmetic number, because the mean of its divisors is an integer number (2692296048).

Almost surely, 2^21330213011 is an apocalyptic number.

21330213011 is a deficient number, since it is larger than the sum of its proper divisors (208155373).

21330213011 is a wasteful number, since it uses less digits than its factorization.

21330213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170221.

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

Adding to 21330213011 its reverse (11031203312), we get a palindrome (32361416323).

The spelling of 21330213011 in words is "twenty-one billion, three hundred thirty million, two hundred thirteen thousand, eleven".