2001112033020 has 144 divisors (see below), whose sum is σ = 5745754025088. Its totient is φ = 520100784000.

The previous prime is 2001112033007. The next prime is 2001112033033. The reversal of 2001112033020 is 203302111002.

It is an interprime number because it is at equal distance from previous prime (2001112033007) and next prime (2001112033033).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 888986895 + ... + 888989145.

Almost surely, 2^{2001112033020} is an apocalyptic number.

2001112033020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001112033020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872877012544).

2001112033020 is an abundant number, since it is smaller than the sum of its proper divisors (3744641992068).

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

2001112033020 is a wasteful number, since it uses less digits than its factorization.

2001112033020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 2891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2001112033020 its reverse (203302111002), we get a palindrome (2204414144022).

The spelling of 2001112033020 in words is "two trillion, one billion, one hundred twelve million, thirty-three thousand, twenty".