200201121791 has 16 divisors (see below), whose sum is σ = 218843378208. Its totient is φ = 181632950400.

The previous prime is 200201121767. The next prime is 200201121829. The reversal of 200201121791 is 197121102002.

It is not a de Polignac number, because 200201121791 - 2²² = 200196927487 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 200201121791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200201123791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11368205 + ... + 11385801.

It is an arithmetic number, because the mean of its divisors is an integer number (13677711138).

Almost surely, 2^200201121791 is an apocalyptic number.

200201121791 is a deficient number, since it is larger than the sum of its proper divisors (18642256417).

200201121791 is a wasteful number, since it uses less digits than its factorization.

200201121791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19642.

The product of its (nonzero) digits is 504, while the sum is 26.

Adding to 200201121791 its reverse (197121102002), we get a palindrome (397322223793).

The spelling of 200201121791 in words is "two hundred billion, two hundred one million, one hundred twenty-one thousand, seven hundred ninety-one".