1200201210001 has 2 divisors, whose sum is σ = 1200201210002. Its totient is φ = 1200201210000.

The previous prime is 1200201209989. The next prime is 1200201210037. The reversal of 1200201210001 is 1000121020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152292755601 + 47908454400 = 1073449^2 + 218880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200201210001 - 2²⁵ = 1200167655569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200201210001.

It is not a weakly prime, because it can be changed into another prime (1200201210071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600100605000 + 600100605001.

It is an arithmetic number, because the mean of its divisors is an integer number (600100605001).

Almost surely, 2^{1200201210001} is an apocalyptic number.

It is an amenable number.

1200201210001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200201210001 is an equidigital number, since it uses as much as digits as its factorization.

1200201210001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1200201210001 its reverse (1000121020021), we get a palindrome (2200322230022).

The spelling of 1200201210001 in words is "one trillion, two hundred billion, two hundred one million, two hundred ten thousand, one".