12122221024 has 96 divisors (see below), whose sum is σ = 25391439360. Its totient is φ = 5684777472.

The previous prime is 12122220973. The next prime is 12122221037. The reversal of 12122221024 is 42012222121.

It is a junction number, because it is equal to n+sod(n) for n = 12122220992 and 12122221010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14447997 + ... + 14448835.

It is an arithmetic number, because the mean of its divisors is an integer number (264494160).

Almost surely, 2^12122221024 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 12122221024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12695719680).

12122221024 is an abundant number, since it is smaller than the sum of its proper divisors (13269218336).

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

12122221024 is a wasteful number, since it uses less digits than its factorization.

12122221024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12122221024 its reverse (42012222121), we get a palindrome (54134443145).

The spelling of 12122221024 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-four".