21330233311 has 8 divisors (see below), whose sum is σ = 21560186880. Its totient is φ = 21101248728.

The previous prime is 21330233299. The next prime is 21330233347. The reversal of 21330233311 is 11333203312.

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

It is a cyclic number.

It is not a de Polignac number, because 21330233311 - 2⁵ = 21330233279 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 (21330233411) 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, 197941 + ... + 286078.

It is an arithmetic number, because the mean of its divisors is an integer number (2695023360).

Almost surely, 2^21330233311 is an apocalyptic number.

21330233311 is a deficient number, since it is larger than the sum of its proper divisors (229953569).

21330233311 is a wasteful number, since it uses less digits than its factorization.

21330233311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484493.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21330233311 its reverse (11333203312), we get a palindrome (32663436623).

The spelling of 21330233311 in words is "twenty-one billion, three hundred thirty million, two hundred thirty-three thousand, three hundred eleven".