223412121 has 16 divisors (see below), whose sum is σ = 331337920. Its totient is φ = 148780800.

The previous prime is 223412117. The next prime is 223412131. The reversal of 223412121 is 121214322.

It is a happy number.

It is not a de Polignac number, because 223412121 - 2² = 223412117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223412094 and 223412103.

It is not an unprimeable number, because it can be changed into a prime (223412131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24441 + ... + 32313.

It is an arithmetic number, because the mean of its divisors is an integer number (20708620).

Almost surely, 2^223412121 is an apocalyptic number.

It is an amenable number.

223412121 is a deficient number, since it is larger than the sum of its proper divisors (107925799).

223412121 is a wasteful number, since it uses less digits than its factorization.

223412121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8933 (or 8927 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 223412121 is about 14946.9769853305. The cubic root of 223412121 is about 606.7860351932.

Adding to 223412121 its reverse (121214322), we get a palindrome (344626443).

It can be divided in two parts, 22 and 3412121, that added together give a palindrome (3412143).

The spelling of 223412121 in words is "two hundred twenty-three million, four hundred twelve thousand, one hundred twenty-one".