12221121123120 has 480 divisors, whose sum is σ = 47405521852416. Its totient is φ = 2536234536960.

The previous prime is 12221121123083. The next prime is 12221121123143. The reversal of 12221121123120 is 2132112112221.

12221121123120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 81191449 + ... + 81341831.

Almost surely, 2^{12221121123120} is an apocalyptic number.

12221121123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12221121123120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23702760926208).

12221121123120 is an abundant number, since it is smaller than the sum of its proper divisors (35184400729296).

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

12221121123120 is a wasteful number, since it uses less digits than its factorization.

12221121123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150541 (or 150474 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12221121123120 its reverse (2132112112221), we get a palindrome (14353233235341).

The spelling of 12221121123120 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty".