12223122121 has 8 divisors (see below), whose sum is σ = 13981797440. Its totient is φ = 10467575568.

The previous prime is 12223122113. The next prime is 12223122133. The reversal of 12223122121 is 12122132221.

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

It is a cyclic number.

It is not a de Polignac number, because 12223122121 - 2³ = 12223122113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12223122521) 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, 773811 + ... + 789448.

It is an arithmetic number, because the mean of its divisors is an integer number (1747724680).

Almost surely, 2^12223122121 is an apocalyptic number.

It is an amenable number.

12223122121 is a deficient number, since it is larger than the sum of its proper divisors (1758675319).

12223122121 is a wasteful number, since it uses less digits than its factorization.

12223122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564383.

The product of its digits is 192, while the sum is 19.

Adding to 12223122121 its reverse (12122132221), we get a palindrome (24345254342).

The spelling of 12223122121 in words is "twelve billion, two hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-one".