12111322221232 has 120 divisors (see below), whose sum is σ = 26910600736320. Its totient is φ = 5259789250560.

The previous prime is 12111322221223. The next prime is 12111322221233. The reversal of 12111322221232 is 23212222311121.

It is a junction number, because it is equal to n+sod(n) for n = 12111322221197 and 12111322221206.

It is not an unprimeable number, because it can be changed into a prime (12111322221233) 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 23 ways as a sum of consecutive naturals, for example, 211010394 + ... + 211067782.

It is an arithmetic number, because the mean of its divisors is an integer number (224255006136).

Almost surely, 2^{12111322221232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12111322221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13455300368160).

12111322221232 is an abundant number, since it is smaller than the sum of its proper divisors (14799278515088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111322221232 is a wasteful number, since it uses less digits than its factorization.

12111322221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62031 (or 62012 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

Adding to 12111322221232 its reverse (23212222311121), we get a palindrome (35323544532353).

The spelling of 12111322221232 in words is "twelve trillion, one hundred eleven billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred thirty-two".