223240021111 has 4 divisors (see below), whose sum is σ = 223241246752. Its totient is φ = 223238795472.

The previous prime is 223240021091. The next prime is 223240021153. The reversal of 223240021111 is 111120042322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111120042322 = 2 ⋅55560021161.

It is a cyclic number.

It is not a de Polignac number, because 223240021111 - 2²¹ = 223237923959 is a prime.

It is a super-3 number, since 3×223240021111³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223240021211) 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, 278991 + ... + 724096.

It is an arithmetic number, because the mean of its divisors is an integer number (55810311688).

Almost surely, 2^223240021111 is an apocalyptic number.

223240021111 is a deficient number, since it is larger than the sum of its proper divisors (1225641).

223240021111 is a wasteful number, since it uses less digits than its factorization.

223240021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225640.

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

Adding to 223240021111 its reverse (111120042322), we get a palindrome (334360063433).

The spelling of 223240021111 in words is "two hundred twenty-three billion, two hundred forty million, twenty-one thousand, one hundred eleven".