2001033231123 has 32 divisors (see below), whose sum is σ = 2711733437952. Its totient is φ = 1312380742400.

The previous prime is 2001033231107. The next prime is 2001033231149. The reversal of 2001033231123 is 3211323301002.

It is a cyclic number.

It is not a de Polignac number, because 2001033231123 - 2⁴ = 2001033231107 is a prime.

It is a super-2 number, since 2×2001033231123² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2001033231123.

It is not an unprimeable number, because it can be changed into a prime (2001033231623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39978853 + ... + 40028873.

It is an arithmetic number, because the mean of its divisors is an integer number (84741669936).

Almost surely, 2^{2001033231123} is an apocalyptic number.

2001033231123 is a deficient number, since it is larger than the sum of its proper divisors (710700206829).

2001033231123 is a wasteful number, since it uses less digits than its factorization.

2001033231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51035.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2001033231123 its reverse (3211323301002), we get a palindrome (5212356532125).

The spelling of 2001033231123 in words is "two trillion, one billion, thirty-three million, two hundred thirty-one thousand, one hundred twenty-three".