2011212001111 has 4 divisors (see below), whose sum is σ = 2024022268792. Its totient is φ = 1998401733432.

The previous prime is 2011212001061. The next prime is 2011212001121. The reversal of 2011212001111 is 1111002121102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2011212001111 - 2⁷ = 2011212000983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011212001091 and 2011212001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011212001121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6405133605 + ... + 6405133918.

It is an arithmetic number, because the mean of its divisors is an integer number (506005567198).

Almost surely, 2^{2011212001111} is an apocalyptic number.

2011212001111 is a deficient number, since it is larger than the sum of its proper divisors (12810267681).

2011212001111 is a wasteful number, since it uses less digits than its factorization.

2011212001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12810267680.

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

Adding to 2011212001111 its reverse (1111002121102), we get a palindrome (3122214122213).

The spelling of 2011212001111 in words is "two trillion, eleven billion, two hundred twelve million, one thousand, one hundred eleven".