201091521241 has 8 divisors (see below), whose sum is σ = 216645698304. Its totient is φ = 185549572560.

The previous prime is 201091521193. The next prime is 201091521287. The reversal of 201091521241 is 142125190102.

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 201091521241 - 2²³ = 201083132633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201091521341) 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, 3022921 + ... + 3088726.

It is an arithmetic number, because the mean of its divisors is an integer number (27080712288).

Almost surely, 2^201091521241 is an apocalyptic number.

It is an amenable number.

201091521241 is a deficient number, since it is larger than the sum of its proper divisors (15554177063).

201091521241 is a wasteful number, since it uses less digits than its factorization.

201091521241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114191.

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 201091521241 in words is "two hundred one billion, ninety-one million, five hundred twenty-one thousand, two hundred forty-one".