2001223120133 has 4 divisors (see below), whose sum is σ = 2001239448000. Its totient is φ = 2001206792268.

The previous prime is 2001223120129. The next prime is 2001223120219. The reversal of 2001223120133 is 3310213221002.

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 2001223120133 - 2² = 2001223120129 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 (2001223120433) 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, 7978685 + ... + 8225682.

It is an arithmetic number, because the mean of its divisors is an integer number (500309862000).

Almost surely, 2^{2001223120133} is an apocalyptic number.

It is an amenable number.

2001223120133 is a deficient number, since it is larger than the sum of its proper divisors (16327867).

2001223120133 is a wasteful number, since it uses less digits than its factorization.

2001223120133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16327866.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2001223120133 its reverse (3310213221002), we get a palindrome (5311436341135).

The spelling of 2001223120133 in words is "two trillion, one billion, two hundred twenty-three million, one hundred twenty thousand, one hundred thirty-three".