2001231120333 has 32 divisors (see below), whose sum is σ = 2766152263680. Its totient is φ = 1286093318400.

The previous prime is 2001231120323. The next prime is 2001231120391. The reversal of 2001231120333 is 3330211321002.

It is a de Polignac number, because none of the positive numbers 2^k-2001231120333 is a prime.

It is a super-3 number, since 3×2001231120333³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001231120313) 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, 100610053 + ... + 100629941.

It is an arithmetic number, because the mean of its divisors is an integer number (86442258240).

Almost surely, 2^{2001231120333} is an apocalyptic number.

It is an amenable number.

2001231120333 is a deficient number, since it is larger than the sum of its proper divisors (764921143347).

2001231120333 is a wasteful number, since it uses less digits than its factorization.

2001231120333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30657.

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

Adding to 2001231120333 its reverse (3330211321002), we get a palindrome (5331442441335).

The spelling of 2001231120333 in words is "two trillion, one billion, two hundred thirty-one million, one hundred twenty thousand, three hundred thirty-three".