2001022133 has 12 divisors (see below), whose sum is σ = 2246274240. Its totient is φ = 1780401480.

The previous prime is 2001022129. The next prime is 2001022139. The reversal of 2001022133 is 3312201002.

It is a happy number.

It is not a de Polignac number, because 2001022133 - 2² = 2001022129 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 (2001022139) 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 11 ways as a sum of consecutive naturals, for example, 170243 + ... + 181616.

It is an arithmetic number, because the mean of its divisors is an integer number (187189520).

Almost surely, 2^2001022133 is an apocalyptic number.

It is an amenable number.

2001022133 is a deficient number, since it is larger than the sum of its proper divisors (245252107).

2001022133 is a wasteful number, since it uses less digits than its factorization.

2001022133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351928 (or 351917 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2001022133 is about 44732.7858846283. The cubic root of 2001022133 is about 1260.1356478215.

Adding to 2001022133 its reverse (3312201002), we get a palindrome (5313223135).

The spelling of 2001022133 in words is "two billion, one million, twenty-two thousand, one hundred thirty-three".