201211001000191 has 8 divisors (see below), whose sum is σ = 247644308923424. Its totient is φ = 159199912879200.

The previous prime is 201211001000173. The next prime is 201211001000201. The reversal of 201211001000191 is 191000100112102.

201211001000191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201211001000191 - 2⁷ = 201211001000063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211001000111) 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, 1105554950460 + ... + 1105554950641.

It is an arithmetic number, because the mean of its divisors is an integer number (30955538615428).

Almost surely, 2^{201211001000191} is an apocalyptic number.

201211001000191 is a deficient number, since it is larger than the sum of its proper divisors (46433307923233).

201211001000191 is a wasteful number, since it uses less digits than its factorization.

201211001000191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211109901121.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 201211001000191 its reverse (191000100112102), we get a palindrome (392211101112293).

The spelling of 201211001000191 in words is "two hundred one trillion, two hundred eleven billion, one million, one hundred ninety-one", and thus it is an aban number.