12213321221120 has 88 divisors (see below), whose sum is σ = 29850445116504. Its totient is φ = 4793152372736.

The previous prime is 12213321221107. The next prime is 12213321221147. The reversal of 12213321221120 is 2112212331221.

It can be written as a sum of positive squares in 4 ways, for example, as 2227114491904 + 9986206729216 = 1492352^2 + 3160096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22232549 + ... + 22775268.

Almost surely, 2^{12213321221120} is an apocalyptic number.

12213321221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213321221120 is an abundant number, since it is smaller than the sum of its proper divisors (17637123895384).

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

12213321221120 is an equidigital number, since it uses as much as digits as its factorization.

12213321221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45007895 (or 45007877 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12213321221120 its reverse (2112212331221), we get a palindrome (14325533552341).

The spelling of 12213321221120 in words is "twelve trillion, two hundred thirteen billion, three hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty".