12223120121 has 16 divisors (see below), whose sum is σ = 12621681408. Its totient is φ = 11829628800.

The previous prime is 12223120103. The next prime is 12223120123. The reversal of 12223120121 is 12102132221.

It is a cyclic number.

It is not a de Polignac number, because 12223120121 - 2⁶ = 12223120057 is a prime.

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 12223120121.

It is not an unprimeable number, because it can be changed into a prime (12223120123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4416080 + ... + 4418846.

It is an arithmetic number, because the mean of its divisors is an integer number (788855088).

Almost surely, 2^12223120121 is an apocalyptic number.

It is an amenable number.

12223120121 is a deficient number, since it is larger than the sum of its proper divisors (398561287).

12223120121 is a wasteful number, since it uses less digits than its factorization.

12223120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12223120121 its reverse (12102132221), we get a palindrome (24325252342).

The spelling of 12223120121 in words is "twelve billion, two hundred twenty-three million, one hundred twenty thousand, one hundred twenty-one".