223121144 has 8 divisors (see below), whose sum is σ = 418352160. Its totient is φ = 111560568.

The previous prime is 223121117. The next prime is 223121177. The reversal of 223121144 is 441121322.

223121144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×223121144³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13945064 + ... + 13945079.

It is an arithmetic number, because the mean of its divisors is an integer number (52294020).

Almost surely, 2^223121144 is an apocalyptic number.

It is an amenable number.

223121144 is a deficient number, since it is larger than the sum of its proper divisors (195231016).

223121144 is a wasteful number, since it uses less digits than its factorization.

223121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27890149 (or 27890145 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 223121144 is about 14937.2401734725. The cubic root of 223121144 is about 606.5224901251.

Adding to 223121144 its reverse (441121322), we get a palindrome (664242466).

The spelling of 223121144 in words is "two hundred twenty-three million, one hundred twenty-one thousand, one hundred forty-four".