2001231103112 has 8 divisors (see below), whose sum is σ = 3752308318350. Its totient is φ = 1000615551552.

The previous prime is 2001231103099. The next prime is 2001231103129. The reversal of 2001231103112 is 2113011321002.

It can be written as a sum of positive squares in only one way, i.e., 1985861550436 + 15369552676 = 1409206^2 + 123974^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125076943937 + ... + 125076943952.

Almost surely, 2^{2001231103112} is an apocalyptic number.

It is an amenable number.

2001231103112 is a deficient number, since it is larger than the sum of its proper divisors (1751077215238).

2001231103112 is a wasteful number, since it uses less digits than its factorization.

2001231103112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250153887895 (or 250153887891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2001231103112 its reverse (2113011321002), we get a palindrome (4114242424114).

The spelling of 2001231103112 in words is "two trillion, one billion, two hundred thirty-one million, one hundred three thousand, one hundred twelve".