12220928220 has 48 divisors (see below), whose sum is σ = 35053206048. Its totient is φ = 3179427840.

The previous prime is 12220928183. The next prime is 12220928273. The reversal of 12220928220 is 2282902221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2481469 + ... + 2486388.

It is an arithmetic number, because the mean of its divisors is an integer number (730275126).

Almost surely, 2^12220928220 is an apocalyptic number.

12220928220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220928220 is an abundant number, since it is smaller than the sum of its proper divisors (22832277828).

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

12220928220 is a wasteful number, since it uses less digits than its factorization.

12220928220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967910 (or 4967908 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 12220928220 in words is "twelve billion, two hundred twenty million, nine hundred twenty-eight thousand, two hundred twenty".