201123232313121 has 12 divisors (see below), whose sum is σ = 290522517585300. Its totient is φ = 134076993942240.

The previous prime is 201123232313077. The next prime is 201123232313161. The reversal of 201123232313121 is 121313232321102.

201123232313121 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 2 + 323 + 2 + 313 + 1 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 165001449493521 + 36121782819600 = 12845289^2 + 6010140^2 .

It is not a de Polignac number, because 201123232313121 - 2¹⁰ = 201123232312097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201123232313161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429830946 + ... + 430298603.

It is an arithmetic number, because the mean of its divisors is an integer number (24210209798775).

Almost surely, 2^{201123232313121} is an apocalyptic number.

It is an amenable number.

201123232313121 is a deficient number, since it is larger than the sum of its proper divisors (89399285272179).

201123232313121 is a wasteful number, since it uses less digits than its factorization.

201123232313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860155536 (or 860155533 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 201123232313121 its reverse (121313232321102), we get a palindrome (322436464634223).

The spelling of 201123232313121 in words is "two hundred one trillion, one hundred twenty-three billion, two hundred thirty-two million, three hundred thirteen thousand, one hundred twenty-one".