209929930012 has 24 divisors (see below), whose sum is σ = 402452225280. Its totient is φ = 95023432560.

The previous prime is 209929930009. The next prime is 209929930039. The reversal of 209929930012 is 210039929902.

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, 9970938 + ... + 9991969.

It is an arithmetic number, because the mean of its divisors is an integer number (16768842720).

Almost surely, 2^209929930012 is an apocalyptic number.

209929930012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

209929930012 is a deficient number, since it is larger than the sum of its proper divisors (192522295268).

209929930012 is a wasteful number, since it uses less digits than its factorization.

209929930012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19963161 (or 19963159 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The spelling of 209929930012 in words is "two hundred nine billion, nine hundred twenty-nine million, nine hundred thirty thousand, twelve".