223444243121 has 16 divisors (see below), whose sum is σ = 249551225088. Its totient is φ = 198307645200.

The previous prime is 223444243111. The next prime is 223444243133. The reversal of 223444243121 is 121342444322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 223444243121 - 2²² = 223440048817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (223444243111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833750 + ... + 1068656.

It is an arithmetic number, because the mean of its divisors is an integer number (15596951568).

Almost surely, 2^223444243121 is an apocalyptic number.

It is an amenable number.

223444243121 is a deficient number, since it is larger than the sum of its proper divisors (26106981967).

223444243121 is a wasteful number, since it uses less digits than its factorization.

223444243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236972.

The product of its digits is 36864, while the sum is 32.

Adding to 223444243121 its reverse (121342444322), we get a palindrome (344786687443).

The spelling of 223444243121 in words is "two hundred twenty-three billion, four hundred forty-four million, two hundred forty-three thousand, one hundred twenty-one".