12203322121 has 4 divisors (see below), whose sum is σ = 12403376644. Its totient is φ = 12003267600.

The previous prime is 12203322101. The next prime is 12203322137. The reversal of 12203322121 is 12122330221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6360860025 + 5842462096 = 79755^2 + 76436^2 .

It is a cyclic number.

It is not a de Polignac number, because 12203322121 - 2⁹ = 12203321609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12203322101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100027170 + ... + 100027291.

It is an arithmetic number, because the mean of its divisors is an integer number (3100844161).

Almost surely, 2^12203322121 is an apocalyptic number.

It is an amenable number.

12203322121 is a deficient number, since it is larger than the sum of its proper divisors (200054523).

12203322121 is an equidigital number, since it uses as much as digits as its factorization.

12203322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200054522.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12203322121 its reverse (12122330221), we get a palindrome (24325652342).

The spelling of 12203322121 in words is "twelve billion, two hundred three million, three hundred twenty-two thousand, one hundred twenty-one".