2001133223 has 4 divisors (see below), whose sum is σ = 2118846960. Its totient is φ = 1883419488.

The previous prime is 2001133201. The next prime is 2001133231. The reversal of 2001133223 is 3223311002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001133223 - 2¹⁴ = 2001116839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 117713719 = 2001133223 / (2 + 0 + 0 + 1 + 1 + 3 + 3 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001133273) 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, 58856843 + ... + 58856876.

It is an arithmetic number, because the mean of its divisors is an integer number (529711740).

Almost surely, 2^2001133223 is an apocalyptic number.

2001133223 is a deficient number, since it is larger than the sum of its proper divisors (117713737).

2001133223 is a wasteful number, since it uses less digits than its factorization.

2001133223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117713736.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2001133223 is about 44734.0275740962. The cubic root of 2001133223 is about 1260.1589668837.

Adding to 2001133223 its reverse (3223311002), we get a palindrome (5224444225).

The spelling of 2001133223 in words is "two billion, one million, one hundred thirty-three thousand, two hundred twenty-three".