2001112201144 has 32 divisors (see below), whose sum is σ = 4303920844800. Its totient is φ = 854454860640.

The previous prime is 2001112201139. The next prime is 2001112201169. The reversal of 2001112201144 is 4411022111002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65914984 + ... + 65945335.

It is an arithmetic number, because the mean of its divisors is an integer number (134497526400).

Almost surely, 2^{2001112201144} is an apocalyptic number.

It is an amenable number.

2001112201144 is an abundant number, since it is smaller than the sum of its proper divisors (2302808643656).

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

2001112201144 is a wasteful number, since it uses less digits than its factorization.

2001112201144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131860603 (or 131860599 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2001112201144 its reverse (4411022111002), we get a palindrome (6412134312146).

It can be divided in two parts, 2001112 and 201144, that added together give a square (2202256 = 1484²).

The spelling of 2001112201144 in words is "two trillion, one billion, one hundred twelve million, two hundred one thousand, one hundred forty-four".