1012111200205 has 16 divisors (see below), whose sum is σ = 1400321746944. Its totient is φ = 687877344000.

The previous prime is 1012111200187. The next prime is 1012111200209. The reversal of 1012111200205 is 5020021112101.

It is not a de Polignac number, because 1012111200205 - 2⁷ = 1012111200077 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 (1012111200209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127949421 + ... + 127957330.

It is an arithmetic number, because the mean of its divisors is an integer number (87520109184).

Almost surely, 2^{1012111200205} is an apocalyptic number.

It is an amenable number.

1012111200205 is a deficient number, since it is larger than the sum of its proper divisors (388210546739).

1012111200205 is a wasteful number, since it uses less digits than its factorization.

1012111200205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255906876.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1012111200205 its reverse (5020021112101), we get a palindrome (6032132312306).

The spelling of 1012111200205 in words is "one trillion, twelve billion, one hundred eleven million, two hundred thousand, two hundred five".