20121110000205 has 8 divisors (see below), whose sum is σ = 32193776000352. Its totient is φ = 10731258666768.

The previous prime is 20121110000191. The next prime is 20121110000207. The reversal of 20121110000205 is 50200001112102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20121110000205 - 2¹⁰ = 20121109999181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1341407333347 = 20121110000205 / (2 + 0 + 1 + 2 + 1 + 1 + 1 + 0 + 0 + 0 + 0 + 2 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121110000207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670703666659 + ... + 670703666688.

It is an arithmetic number, because the mean of its divisors is an integer number (4024222000044).

Almost surely, 2^{20121110000205} is an apocalyptic number.

It is an amenable number.

20121110000205 is a deficient number, since it is larger than the sum of its proper divisors (12072666000147).

20121110000205 is a wasteful number, since it uses less digits than its factorization.

20121110000205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341407333355.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 20121110000205 its reverse (50200001112102), we get a palindrome (70321111112307).

The spelling of 20121110000205 in words is "twenty trillion, one hundred twenty-one billion, one hundred ten million, two hundred five", and thus it is an aban number.