2001112120000 has 140 divisors (see below), whose sum is σ = 5670981017680. Its totient is φ = 686095488000.

The previous prime is 2001112119989. The next prime is 2001112120087. The reversal of 2001112120000 is 212111002.

It is a tau number, because it is divible by the number of its divisors (140).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3293415 + ... + 3853414.

Almost surely, 2^{2001112120000} is an apocalyptic number.

2001112120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001112120000 is an abundant number, since it is smaller than the sum of its proper divisors (3669868897680).

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

2001112120000 is an frugal number, since it uses more digits than its factorization.

2001112120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146868 (or 7146843 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2001112120000 its reverse (212111002), we get a palindrome (2001324231002).

The spelling of 2001112120000 in words is "two trillion, one billion, one hundred twelve million, one hundred twenty thousand".