12221120012250 has 64 divisors (see below), whose sum is σ = 32109384827520. Its totient is φ = 3087440841600.

The previous prime is 12221120012183. The next prime is 12221120012251. The reversal of 12221120012250 is 5221002112221.

It is not an unprimeable number, because it can be changed into a prime (12221120012251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428796979 + ... + 428825478.

It is an arithmetic number, because the mean of its divisors is an integer number (501709137930).

Almost surely, 2^{12221120012250} is an apocalyptic number.

12221120012250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221120012250 is an abundant number, since it is smaller than the sum of its proper divisors (19888264815270).

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

12221120012250 is a wasteful number, since it uses less digits than its factorization.

12221120012250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857622496 (or 857622486 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 12221120012250 its reverse (5221002112221), we get a palindrome (17442122124471).

The spelling of 12221120012250 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty million, twelve thousand, two hundred fifty".