201331121 has 8 divisors (see below), whose sum is σ = 210376320. Its totient is φ = 192310272.

The previous prime is 201331111. The next prime is 201331133. The reversal of 201331121 is 121133102.

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 201331121 - 2⁶ = 201331057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201331096 and 201331105.

It is not an unprimeable number, because it can be changed into a prime (201331111) 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, 11996 + ... + 23378.

It is an arithmetic number, because the mean of its divisors is an integer number (26297040).

Almost surely, 2^201331121 is an apocalyptic number.

It is an amenable number.

201331121 is a deficient number, since it is larger than the sum of its proper divisors (9045199).

201331121 is a wasteful number, since it uses less digits than its factorization.

201331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12175.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 201331121 is about 14189.1198106155. The cubic root of 201331121 is about 586.0980870338.

Adding to 201331121 its reverse (121133102), we get a palindrome (322464223).

The spelling of 201331121 in words is "two hundred one million, three hundred thirty-one thousand, one hundred twenty-one".