12208791220 has 12 divisors (see below), whose sum is σ = 25638461604. Its totient is φ = 4883516480.

The previous prime is 12208791209. The next prime is 12208791233. The reversal of 12208791220 is 2219780221.

It can be written as a sum of positive squares in 2 ways, for example, as 7650651024 + 4558140196 = 87468^2 + 67514^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305219761 + ... + 305219800.

It is an arithmetic number, because the mean of its divisors is an integer number (2136538467).

Almost surely, 2^12208791220 is an apocalyptic number.

12208791220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12208791220 is an abundant number, since it is smaller than the sum of its proper divisors (13429670384).

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

12208791220 is a wasteful number, since it uses less digits than its factorization.

12208791220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610439570 (or 610439568 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 12208791220 in words is "twelve billion, two hundred eight million, seven hundred ninety-one thousand, two hundred twenty".