1012121200205 has 16 divisors (see below), whose sum is σ = 1219088219904. Its totient is φ = 806669485440.

The previous prime is 1012121200193. The next prime is 1012121200249. The reversal of 1012121200205 is 5020021212101.

It is a de Polignac number, because none of the positive numbers 2^k-1012121200205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8062832 + ... + 8187398.

It is an arithmetic number, because the mean of its divisors is an integer number (76193013744).

Almost surely, 2^{1012121200205} is an apocalyptic number.

It is an amenable number.

1012121200205 is a deficient number, since it is larger than the sum of its proper divisors (206967019699).

1012121200205 is a wasteful number, since it uses less digits than its factorization.

1012121200205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130636.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1012121200205 its reverse (5020021212101), we get a palindrome (6032142412306).

The spelling of 1012121200205 in words is "one trillion, twelve billion, one hundred twenty-one million, two hundred thousand, two hundred five".