12224122221 has 8 divisors (see below), whose sum is σ = 17257584384. Its totient is φ = 7670037440.

The previous prime is 12224122171. The next prime is 12224122241. The reversal of 12224122221 is 12222142221.

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 12224122221 - 2¹⁴ = 12224105837 is a prime.

It is a super-3 number, since 3×12224122221³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224122241) 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 7 ways as a sum of consecutive naturals, for example, 119844285 + ... + 119844386.

It is an arithmetic number, because the mean of its divisors is an integer number (2157198048).

Almost surely, 2^12224122221 is an apocalyptic number.

It is an amenable number.

12224122221 is a deficient number, since it is larger than the sum of its proper divisors (5033462163).

12224122221 is a wasteful number, since it uses less digits than its factorization.

12224122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239688691.

The product of its digits is 512, while the sum is 21.

Adding to 12224122221 its reverse (12222142221), we get a palindrome (24446264442).

The spelling of 12224122221 in words is "twelve billion, two hundred twenty-four million, one hundred twenty-two thousand, two hundred twenty-one".