12201022220 has 24 divisors (see below), whose sum is σ = 25770258864. Its totient is φ = 4852197056.

The previous prime is 12201022189. The next prime is 12201022259. The reversal of 12201022220 is 2222010221.

It is a junction number, because it is equal to n+sod(n) for n = 12201022195 and 12201022204.

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, 1759694 + ... + 1766613.

It is an arithmetic number, because the mean of its divisors is an integer number (1073760786).

Almost surely, 2^12201022220 is an apocalyptic number.

12201022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201022220 is an abundant number, since it is smaller than the sum of its proper divisors (13569236644).

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

12201022220 is a wasteful number, since it uses less digits than its factorization.

12201022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526489 (or 3526487 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12201022220 its reverse (2222010221), we get a palindrome (14423032441).

The spelling of 12201022220 in words is "twelve billion, two hundred one million, twenty-two thousand, two hundred twenty".