223240121111 has 12 divisors (see below), whose sum is σ = 259990555968. Its totient is φ = 191125361952.

The previous prime is 223240121101. The next prime is 223240121113. The reversal of 223240121111 is 111121042322.

It is not a de Polignac number, because 223240121111 - 2¹⁸ = 223239858967 is a prime.

It is a super-3 number, since 3×223240121111³ (a number of 35 digits) contains 333 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 (223240121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2616071 + ... + 2700056.

It is an arithmetic number, because the mean of its divisors is an integer number (21665879664).

Almost surely, 2^223240121111 is an apocalyptic number.

223240121111 is a deficient number, since it is larger than the sum of its proper divisors (36750434857).

223240121111 is an equidigital number, since it uses as much as digits as its factorization.

223240121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316998 (or 5316991 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 223240121111 its reverse (111121042322), we get a palindrome (334361163433).

The spelling of 223240121111 in words is "two hundred twenty-three billion, two hundred forty million, one hundred twenty-one thousand, one hundred eleven".