209102002012 has 12 divisors (see below), whose sum is σ = 366006843216. Its totient is φ = 104528618240.

The previous prime is 209102002003. The next prime is 209102002079. The reversal of 209102002012 is 210200201902.

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, 5574664 + ... + 5612047.

It is an arithmetic number, because the mean of its divisors is an integer number (30500570268).

Almost surely, 2^209102002012 is an apocalyptic number.

It is an amenable number.

209102002012 is a deficient number, since it is larger than the sum of its proper divisors (156904841204).

209102002012 is a wasteful number, since it uses less digits than its factorization.

209102002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191388 (or 11191386 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 209102002012 its reverse (210200201902), we get a palindrome (419302203914).

The spelling of 209102002012 in words is "two hundred nine billion, one hundred two million, two thousand, twelve".