2001311122233 has 16 divisors (see below), whose sum is σ = 2712211603776. Its totient is φ = 1312309871040.

The previous prime is 2001311122231. The next prime is 2001311122319. The reversal of 2001311122233 is 3322211131002.

It is not a de Polignac number, because 2001311122233 - 2¹ = 2001311122231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001311122231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16847635 + ... + 16966007.

It is an arithmetic number, because the mean of its divisors is an integer number (169513225236).

Almost surely, 2^{2001311122233} is an apocalyptic number.

It is an amenable number.

2001311122233 is a deficient number, since it is larger than the sum of its proper divisors (710900481543).

2001311122233 is a wasteful number, since it uses less digits than its factorization.

2001311122233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210824.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2001311122233 its reverse (3322211131002), we get a palindrome (5323522253235).

The spelling of 2001311122233 in words is "two trillion, one billion, three hundred eleven million, one hundred twenty-two thousand, two hundred thirty-three".