21330010111 has 8 divisors (see below), whose sum is σ = 21447462960. Its totient is φ = 21212650368.

The previous prime is 21330010073. The next prime is 21330010127. The reversal of 21330010111 is 11101003312.

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 21330010111 - 2¹⁵ = 21329977343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21330010091 and 21330010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330010151) 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, 464055 + ... + 507943.

It is an arithmetic number, because the mean of its divisors is an integer number (2680932870).

Almost surely, 2^21330010111 is an apocalyptic number.

21330010111 is a deficient number, since it is larger than the sum of its proper divisors (117452849).

21330010111 is a wasteful number, since it uses less digits than its factorization.

21330010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46553.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21330010111 its reverse (11101003312), we get a palindrome (32431013423).

The spelling of 21330010111 in words is "twenty-one billion, three hundred thirty million, ten thousand, one hundred eleven".