121232223 has 36 divisors (see below), whose sum is σ = 208072800. Its totient is φ = 67790016.

The previous prime is 121232213. The next prime is 121232231. The reversal of 121232223 is 322232121.

It is not a de Polignac number, because 121232223 - 2⁵ = 121232191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121232196 and 121232205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17803 + ... + 23651.

It is an arithmetic number, because the mean of its divisors is an integer number (5779800).

Almost surely, 2^121232223 is an apocalyptic number.

121232223 is a deficient number, since it is larger than the sum of its proper divisors (86840577).

121232223 is a wasteful number, since it uses less digits than its factorization.

121232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916 (or 5906 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 121232223 is about 11010.5505311951. The cubic root of 121232223 is about 494.9249595460.

Adding to 121232223 its reverse (322232121), we get a palindrome (443464344).

The spelling of 121232223 in words is "one hundred twenty-one million, two hundred thirty-two thousand, two hundred twenty-three".