223112121 has 8 divisors (see below), whose sum is σ = 310416960. Its totient is φ = 142274352.

The previous prime is 223112107. The next prime is 223112129. The reversal of 223112121 is 121211322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223112121 - 2¹³ = 223103929 is a prime.

It is a super-3 number, since 3×223112121³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 223112121.

It is not an unprimeable number, because it can be changed into a prime (223112129) 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, 1616686 + ... + 1616823.

It is an arithmetic number, because the mean of its divisors is an integer number (38802120).

Almost surely, 2^223112121 is an apocalyptic number.

It is an amenable number.

223112121 is a deficient number, since it is larger than the sum of its proper divisors (87304839).

223112121 is a wasteful number, since it uses less digits than its factorization.

223112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233535.

The product of its digits is 48, while the sum is 15.

The square root of 223112121 is about 14936.9381400607. The cubic root of 223112121 is about 606.5143141090.

Adding to 223112121 its reverse (121211322), we get a palindrome (344323443).

The spelling of 223112121 in words is "two hundred twenty-three million, one hundred twelve thousand, one hundred twenty-one".