201212101001209 has 8 divisors (see below), whose sum is σ = 211841572812480. Its totient is φ = 190586565313200.

The previous prime is 201212101001183. The next prime is 201212101001293. The reversal of 201212101001209 is 902100101212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201212101001209 - 2¹⁹ = 201212100476921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201212101001209.

It is not an unprimeable number, because it can be changed into a prime (201212101001909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983925877 + ... + 984130354.

It is an arithmetic number, because the mean of its divisors is an integer number (26480196601560).

Almost surely, 2^{201212101001209} is an apocalyptic number.

It is an amenable number.

201212101001209 is a deficient number, since it is larger than the sum of its proper divisors (10629471811271).

201212101001209 is a wasteful number, since it uses less digits than its factorization.

201212101001209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968061631.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 201212101001209 in words is "two hundred one trillion, two hundred twelve billion, one hundred one million, one thousand, two hundred nine".