1211000200001 has 2 divisors, whose sum is σ = 1211000200002. Its totient is φ = 1211000200000.

The previous prime is 1211000199991. The next prime is 1211000200013. The reversal of 1211000200001 is 1000020001121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874599040000 + 336401160001 = 935200^2 + 580001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211000200001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1211000200031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500100000 + 605500100001.

It is an arithmetic number, because the mean of its divisors is an integer number (605500100001).

Almost surely, 2^{1211000200001} is an apocalyptic number.

It is an amenable number.

1211000200001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211000200001 is an equidigital number, since it uses as much as digits as its factorization.

1211000200001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1211000200001 its reverse (1000020001121), we get a palindrome (2211020201122).

The spelling of 1211000200001 in words is "one trillion, two hundred eleven billion, two hundred thousand, one".