21224230111 has 8 divisors (see below), whose sum is σ = 24257168000. Its totient is φ = 18191518488.

The previous prime is 21224230081. The next prime is 21224230127. The reversal of 21224230111 is 11103242212.

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 21224230111 - 2³¹ = 19076746463 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 (21224230141) 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, 270640 + ... + 340138.

It is an arithmetic number, because the mean of its divisors is an integer number (3032146000).

Almost surely, 2^21224230111 is an apocalyptic number.

21224230111 is a deficient number, since it is larger than the sum of its proper divisors (3032937889).

21224230111 is an equidigital number, since it uses as much as digits as its factorization.

21224230111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113133.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21224230111 its reverse (11103242212), we get a palindrome (32327472323).

The spelling of 21224230111 in words is "twenty-one billion, two hundred twenty-four million, two hundred thirty thousand, one hundred eleven".