201129 has 4 divisors (see below), whose sum is σ = 268176. Its totient is φ = 134084.

The previous prime is 201121. The next prime is 201139. The reversal of 201129 is 921102.

It is a happy number.

201129 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201129 - 2³ = 201121 is a prime.

It is a D-number.

201129 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (201121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33519 + ... + 33524.

It is an arithmetic number, because the mean of its divisors is an integer number (67044).

2²⁰¹¹²⁹ is an apocalyptic number.

It is an amenable number.

201129 is a deficient number, since it is larger than the sum of its proper divisors (67047).

201129 is an equidigital number, since it uses as much as digits as its factorization.

201129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67046.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 201129 is about 448.4740795185. The cubic root of 201129 is about 58.5901888858.

The spelling of 201129 in words is "two hundred one thousand, one hundred twenty-nine".