12213004121 has 4 divisors (see below), whose sum is σ = 12300867600. Its totient is φ = 12125140644.

The previous prime is 12213004061. The next prime is 12213004127. The reversal of 12213004121 is 12140031221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12213004121 - 2¹⁴ = 12212987737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12213004121.

It is not an unprimeable number, because it can be changed into a prime (12213004127) 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, 43931531 + ... + 43931808.

It is an arithmetic number, because the mean of its divisors is an integer number (3075216900).

Almost surely, 2^12213004121 is an apocalyptic number.

It is an amenable number.

12213004121 is a deficient number, since it is larger than the sum of its proper divisors (87863479).

12213004121 is an equidigital number, since it uses as much as digits as its factorization.

12213004121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87863478.

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

Adding to 12213004121 its reverse (12140031221), we get a palindrome (24353035342).

The spelling of 12213004121 in words is "twelve billion, two hundred thirteen million, four thousand, one hundred twenty-one".