201212101201001 has 6 divisors (see below), whose sum is σ = 221167020328506. Its totient is φ = 182920092000800.

The previous prime is 201212101200991. The next prime is 201212101201073. The reversal of 201212101201001 is 100102101212102.

It can be written as a sum of positive squares in only one way, i.e., 201173828147776 + 38273053225 = 14183576^2 + 195635^2 .

It is not a de Polignac number, because 201212101201001 - 2¹⁴ = 201212101184617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201212101261001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 831454963520 + ... + 831454963761.

It is an arithmetic number, because the mean of its divisors is an integer number (36861170054751).

Almost surely, 2^{201212101201001} is an apocalyptic number.

It is an amenable number.

201212101201001 is a deficient number, since it is larger than the sum of its proper divisors (19954919127505).

201212101201001 is a wasteful number, since it uses less digits than its factorization.

201212101201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662909927303 (or 1662909927292 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201212101201001 its reverse (100102101212102), we get a palindrome (301314202413103).

The spelling of 201212101201001 in words is "two hundred one trillion, two hundred twelve billion, one hundred one million, two hundred one thousand, one".