20102211000205 has 8 divisors (see below), whose sum is σ = 24144642863352. Its totient is φ = 16067109024768.

The previous prime is 20102211000203. The next prime is 20102211000257. The reversal of 20102211000205 is 50200011220102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 860556786244 + 19241654213961 = 927662^2 + 4386531^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20102211000205 - 2¹ = 20102211000203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102211000203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1832465892 + ... + 1832476861.

It is an arithmetic number, because the mean of its divisors is an integer number (3018080357919).

Almost surely, 2^{20102211000205} is an apocalyptic number.

It is an amenable number.

20102211000205 is a deficient number, since it is larger than the sum of its proper divisors (4042431863147).

20102211000205 is a wasteful number, since it uses less digits than its factorization.

20102211000205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664943855.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20102211000205 its reverse (50200011220102), we get a palindrome (70302222220307).

The spelling of 20102211000205 in words is "twenty trillion, one hundred two billion, two hundred eleven million, two hundred five", and thus it is an aban number.