201001133 has 4 divisors (see below), whose sum is σ = 211580160. Its totient is φ = 190422108.

The previous prime is 201001109. The next prime is 201001153. The reversal of 201001133 is 331100102.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331100102 = 2 ⋅165550051.

It is a cyclic number.

It is not a de Polignac number, because 201001133 - 2¹⁰ = 201000109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001153) 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, 5289485 + ... + 5289522.

It is an arithmetic number, because the mean of its divisors is an integer number (52895040).

Almost surely, 2^201001133 is an apocalyptic number.

It is an amenable number.

201001133 is a deficient number, since it is larger than the sum of its proper divisors (10579027).

201001133 is a wasteful number, since it uses less digits than its factorization.

201001133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10579026.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 201001133 is about 14177.4868365307. The cubic root of 201001133 is about 585.7777009013. Note that the first 4 decimals are identical.

Adding to 201001133 its reverse (331100102), we get a palindrome (532101235).

The spelling of 201001133 in words is "two hundred one million, one thousand, one hundred thirty-three".