201000122110091 has 8 divisors (see below), whose sum is σ = 211699437836544. Its totient is φ = 190464154715560.

The previous prime is 201000122110069. The next prime is 201000122110129. The reversal of 201000122110091 is 190011221000102.

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-201000122110091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000122112091) 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, 40837080455 + ... + 40837085376.

It is an arithmetic number, because the mean of its divisors is an integer number (26462429729568).

Almost surely, 2^{201000122110091} is an apocalyptic number.

201000122110091 is a deficient number, since it is larger than the sum of its proper divisors (10699315726453).

201000122110091 is a wasteful number, since it uses less digits than its factorization.

201000122110091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81674165961.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 201000122110091 its reverse (190011221000102), we get a palindrome (391011343110193).

The spelling of 201000122110091 in words is "two hundred one trillion, one hundred twenty-two million, one hundred ten thousand, ninety-one".