2001112011211 has 4 divisors (see below), whose sum is σ = 2001707406424. Its totient is φ = 2000516616000.

The previous prime is 2001112011169. The next prime is 2001112011229. The reversal of 2001112011211 is 1121102111002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001112011211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001112011191 and 2001112011200.

It is not an unprimeable number, because it can be changed into a prime (2001112011251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297692565 + ... + 297699286.

It is an arithmetic number, because the mean of its divisors is an integer number (500426851606).

Almost surely, 2^{2001112011211} is an apocalyptic number.

2001112011211 is a deficient number, since it is larger than the sum of its proper divisors (595395213).

2001112011211 is an equidigital number, since it uses as much as digits as its factorization.

2001112011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595395212.

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

Adding to 2001112011211 its reverse (1121102111002), we get a palindrome (3122214122213).

The spelling of 2001112011211 in words is "two trillion, one billion, one hundred twelve million, eleven thousand, two hundred eleven".