2001223122133 has 8 divisors (see below), whose sum is σ = 2071493783552. Its totient is φ = 1931804226576.

The previous prime is 2001223122001. The next prime is 2001223122139. The reversal of 2001223122133 is 3312213221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001223122133 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 (2001223122139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212936685 + ... + 212946082.

It is an arithmetic number, because the mean of its divisors is an integer number (258936722944).

Almost surely, 2^{2001223122133} is an apocalyptic number.

It is an amenable number.

2001223122133 is a deficient number, since it is larger than the sum of its proper divisors (70270661419).

2001223122133 is a wasteful number, since it uses less digits than its factorization.

2001223122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425882931.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2001223122133 its reverse (3312213221002), we get a palindrome (5313436343135).

The spelling of 2001223122133 in words is "two trillion, one billion, two hundred twenty-three million, one hundred twenty-two thousand, one hundred thirty-three".