12103320220 has 24 divisors (see below), whose sum is σ = 25449301584. Its totient is φ = 4835170176.

The previous prime is 12103320217. The next prime is 12103320241. The reversal of 12103320220 is 2202330121.

It is a junction number, because it is equal to n+sod(n) for n = 12103320194 and 12103320203.

It is a congruent number.

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, 368737 + ... + 400216.

It is an arithmetic number, because the mean of its divisors is an integer number (1060387566).

Almost surely, 2^12103320220 is an apocalyptic number.

12103320220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103320220 is an abundant number, since it is smaller than the sum of its proper divisors (13345981364).

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

12103320220 is a wasteful number, since it uses less digits than its factorization.

12103320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769749 (or 769747 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12103320220 its reverse (2202330121), we get a palindrome (14305650341).

Subtracting from 12103320220 its reverse (2202330121), we obtain a palindrome (9900990099).

The spelling of 12103320220 in words is "twelve billion, one hundred three million, three hundred twenty thousand, two hundred twenty".