12197198220 has 24 divisors (see below), whose sum is σ = 34152155184. Its totient is φ = 3252586176.

The previous prime is 12197198213. The next prime is 12197198261. The reversal of 12197198220 is 2289179121.

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, 101643259 + ... + 101643378.

It is an arithmetic number, because the mean of its divisors is an integer number (1423006466).

Almost surely, 2^12197198220 is an apocalyptic number.

12197198220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12197198220 is an abundant number, since it is smaller than the sum of its proper divisors (21954956964).

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

12197198220 is a wasteful number, since it uses less digits than its factorization.

12197198220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203286649 (or 203286647 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 12197198220 in words is "twelve billion, one hundred ninety-seven million, one hundred ninety-eight thousand, two hundred twenty".