12222121121120 has 24 divisors (see below), whose sum is σ = 28874761149024. Its totient is φ = 4888848448384.

The previous prime is 12222121121059. The next prime is 12222121121123. The reversal of 12222121121120 is 2112112122221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12222121121092 and 12222121121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222121121123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38194128344 + ... + 38194128663.

It is an arithmetic number, because the mean of its divisors is an integer number (1203115047876).

Almost surely, 2^{12222121121120} is an apocalyptic number.

12222121121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222121121120 is an abundant number, since it is smaller than the sum of its proper divisors (16652640027904).

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

12222121121120 is an equidigital number, since it uses as much as digits as its factorization.

12222121121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76388257022 (or 76388257014 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12222121121120 its reverse (2112112122221), we get a palindrome (14334233243341).

The spelling of 12222121121120 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty".