201211009999 has 8 divisors (see below), whose sum is σ = 201364634160. Its totient is φ = 201057432576.

The previous prime is 201211009931. The next prime is 201211010081. The reversal of 201211009999 is 999900112102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201211009999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211009919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17076292 + ... + 17088070.

It is an arithmetic number, because the mean of its divisors is an integer number (25170579270).

Almost surely, 2^201211009999 is an apocalyptic number.

201211009999 is a deficient number, since it is larger than the sum of its proper divisors (153624161).

201211009999 is a wasteful number, since it uses less digits than its factorization.

201211009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23369.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 201211009999 in words is "two hundred one billion, two hundred eleven million, nine thousand, nine hundred ninety-nine".