12221220122120 has 32 divisors (see below), whose sum is σ = 27501456337920. Its totient is φ = 4887828304320.

The previous prime is 12221220122119. The next prime is 12221220122123. The reversal of 12221220122120 is 2122102212221.

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 = 12221220122092 and 12221220122101.

It is not an unprimeable number, because it can be changed into a prime (12221220122123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20316872 + ... + 20909751.

It is an arithmetic number, because the mean of its divisors is an integer number (859420510560).

Almost surely, 2^{12221220122120} is an apocalyptic number.

12221220122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221220122120 is an abundant number, since it is smaller than the sum of its proper divisors (15280236215800).

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

12221220122120 is a wasteful number, since it uses less digits than its factorization.

12221220122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41234045 (or 41234041 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12221220122120 its reverse (2122102212221), we get a palindrome (14343322334341).

The spelling of 12221220122120 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, one hundred twenty".