2001111123330 has 256 divisors, whose sum is σ = 6174604339200. Its totient is φ = 456075360000.

The previous prime is 2001111123329. The next prime is 2001111123353. The reversal of 2001111123330 is 333211111002.

2001111123330 is a `hidden beast` number, since 200 + 1 + 1 + 11 + 123 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7256980 + ... + 7527680.

It is an arithmetic number, because the mean of its divisors is an integer number (24119548200).

Almost surely, 2^{2001111123330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001111123330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3087302169600).

2001111123330 is an abundant number, since it is smaller than the sum of its proper divisors (4173493215870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001111123330 is a wasteful number, since it uses less digits than its factorization.

2001111123330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270878 (or 270872 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 2001111123330 its reverse (333211111002), we get a palindrome (2334322234332).

The spelling of 2001111123330 in words is "two trillion, one billion, one hundred eleven million, one hundred twenty-three thousand, three hundred thirty".