201233121 has 16 divisors (see below), whose sum is σ = 284456448. Its totient is φ = 126316800.

The previous prime is 201233119. The next prime is 201233143. The reversal of 201233121 is 121332102.

It is not a de Polignac number, because 201233121 - 2¹ = 201233119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201233121.

It is not an unprimeable number, because it can be changed into a prime (201233101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25800 + ... + 32681.

It is an arithmetic number, because the mean of its divisors is an integer number (17778528).

Almost surely, 2^201233121 is an apocalyptic number.

It is an amenable number.

201233121 is a deficient number, since it is larger than the sum of its proper divisors (83223327).

201233121 is a wasteful number, since it uses less digits than its factorization.

201233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58552.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 201233121 is about 14185.6660400561. Note that the first 3 decimals coincide. The cubic root of 201233121 is about 586.0029751700.

Adding to 201233121 its reverse (121332102), we get a palindrome (322565223).

The spelling of 201233121 in words is "two hundred one million, two hundred thirty-three thousand, one hundred twenty-one".