21334000111 has 4 divisors (see below), whose sum is σ = 22588941312. Its totient is φ = 20079058912.

The previous prime is 21334000069. The next prime is 21334000117. The reversal of 21334000111 is 11100043312.

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 21334000111 - 2²¹ = 21331902959 is a prime.

It is a super-2 number, since 2×21334000111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334000117) 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, 627470575 + ... + 627470608.

It is an arithmetic number, because the mean of its divisors is an integer number (5647235328).

Almost surely, 2^21334000111 is an apocalyptic number.

21334000111 is a deficient number, since it is larger than the sum of its proper divisors (1254941201).

21334000111 is a wasteful number, since it uses less digits than its factorization.

21334000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254941200.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21334000111 its reverse (11100043312), we get a palindrome (32434043423).

The spelling of 21334000111 in words is "twenty-one billion, three hundred thirty-four million, one hundred eleven", and thus it is an aban number.