21223330111 has 8 divisors (see below), whose sum is σ = 22473728640. Its totient is φ = 19973150208.

The previous prime is 21223330091. The next prime is 21223330151. The reversal of 21223330111 is 11103332212.

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 21223330111 - 2⁷ = 21223329983 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 (21223330151) 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, 172135 + ... + 268471.

It is an arithmetic number, because the mean of its divisors is an integer number (2809216080).

Almost surely, 2^21223330111 is an apocalyptic number.

21223330111 is a deficient number, since it is larger than the sum of its proper divisors (1250398529).

21223330111 is a wasteful number, since it uses less digits than its factorization.

21223330111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109313.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21223330111 its reverse (11103332212), we get a palindrome (32326662323).

The spelling of 21223330111 in words is "twenty-one billion, two hundred twenty-three million, three hundred thirty thousand, one hundred eleven".