21330133030111 has 4 divisors (see below), whose sum is σ = 21347210800000. Its totient is φ = 21313055260224.

The previous prime is 21330133030103. The next prime is 21330133030121. The reversal of 21330133030111 is 11103033103312.

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 21330133030111 - 2³ = 21330133030103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330133030121) 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, 8538883071 + ... + 8538885568.

It is an arithmetic number, because the mean of its divisors is an integer number (5336802700000).

Almost surely, 2^{21330133030111} is an apocalyptic number.

21330133030111 is a deficient number, since it is larger than the sum of its proper divisors (17077769889).

21330133030111 is a wasteful number, since it uses less digits than its factorization.

21330133030111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17077769888.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21330133030111 its reverse (11103033103312), we get a palindrome (32433166133423).

The spelling of 21330133030111 in words is "twenty-one trillion, three hundred thirty billion, one hundred thirty-three million, thirty thousand, one hundred eleven".