2001211011112 has 8 divisors (see below), whose sum is σ = 3752270645850. Its totient is φ = 1000605505552.

The previous prime is 2001211011103. The next prime is 2001211011113. The reversal of 2001211011112 is 2111101121002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1097201780676 + 904009230436 = 1047474^2 + 950794^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2001211011092 and 2001211011101.

It is not an unprimeable number, because it can be changed into a prime (2001211011113) by changing a digit.

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, 125075688187 + ... + 125075688202.

Almost surely, 2^{2001211011112} is an apocalyptic number.

It is an amenable number.

2001211011112 is a deficient number, since it is larger than the sum of its proper divisors (1751059634738).

2001211011112 is a wasteful number, since it uses less digits than its factorization.

2001211011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250151376395 (or 250151376391 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2001211011112 its reverse (2111101121002), we get a palindrome (4112312132114).

The spelling of 2001211011112 in words is "two trillion, one billion, two hundred eleven million, eleven thousand, one hundred twelve".