12120221202220 has 24 divisors (see below), whose sum is σ = 25455710927808. Its totient is φ = 4847470118400.

The previous prime is 12120221202209. The next prime is 12120221202227. The reversal of 12120221202220 is 2220212202121.

It is not an unprimeable number, because it can be changed into a prime (12120221202227) 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, 38486916 + ... + 38800555.

It is an arithmetic number, because the mean of its divisors is an integer number (1060654621992).

Almost surely, 2^{12120221202220} is an apocalyptic number.

12120221202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120221202220 is an abundant number, since it is smaller than the sum of its proper divisors (13335489725588).

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

12120221202220 is a wasteful number, since it uses less digits than its factorization.

12120221202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77295321 (or 77295319 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12120221202220 its reverse (2220212202121), we get a palindrome (14340433404341).

Subtracting from 12120221202220 its reverse (2220212202121), we obtain a palindrome (9900009000099).

The spelling of 12120221202220 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty".