12222201121 has 8 divisors (see below), whose sum is σ = 13207297320. Its totient is φ = 11243523072.

The previous prime is 12222201107. The next prime is 12222201161. The reversal of 12222201121 is 12110222221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1255922721 + 10966278400 = 35439^2 + 104720^2 .

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 12222201121 - 2¹³ = 12222192929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222201095 and 12222201104.

It is not an unprimeable number, because it can be changed into a prime (12222201161) 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, 1600576 + ... + 1608193.

It is an arithmetic number, because the mean of its divisors is an integer number (1650912165).

Almost surely, 2^12222201121 is an apocalyptic number.

It is an amenable number.

12222201121 is a deficient number, since it is larger than the sum of its proper divisors (985096199).

12222201121 is a wasteful number, since it uses less digits than its factorization.

12222201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209075.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222201121 its reverse (12110222221), we get a palindrome (24332423342).

The spelling of 12222201121 in words is "twelve billion, two hundred twenty-two million, two hundred one thousand, one hundred twenty-one".