101212000205 has 8 divisors (see below), whose sum is σ = 124736951832. Its totient is φ = 78781232448.

The previous prime is 101212000177. The next prime is 101212000231. The reversal of 101212000205 is 502000212101.

It can be written as a sum of positive squares in 4 ways, for example, as 61085099716 + 40126900489 = 247154^2 + 200317^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212000205 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101212000205.

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, 273545762 + ... + 273546131.

It is an arithmetic number, because the mean of its divisors is an integer number (15592118979).

Almost surely, 2^101212000205 is an apocalyptic number.

It is an amenable number.

101212000205 is a deficient number, since it is larger than the sum of its proper divisors (23524951627).

101212000205 is an equidigital number, since it uses as much as digits as its factorization.

101212000205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547091935.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 101212000205 its reverse (502000212101), we get a palindrome (603212212306).

The spelling of 101212000205 in words is "one hundred one billion, two hundred twelve million, two hundred five", and thus it is an aban number.