1001111212011 has 8 divisors (see below), whose sum is σ = 1334970538384. Its totient is φ = 667329680160.

The previous prime is 1001111211977. The next prime is 1001111212019. The reversal of 1001111212011 is 1102121111001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001111212011 - 2⁷ = 1001111211883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001111212019) 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 7 ways as a sum of consecutive naturals, for example, 19418596 + ... + 19470081.

It is an arithmetic number, because the mean of its divisors is an integer number (166871317298).

Almost surely, 2^{1001111212011} is an apocalyptic number.

1001111212011 is a deficient number, since it is larger than the sum of its proper divisors (333859326373).

1001111212011 is an equidigital number, since it uses as much as digits as its factorization.

1001111212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38897261.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1001111212011 its reverse (1102121111001), we get a palindrome (2103232323012).

The spelling of 1001111212011 in words is "one trillion, one billion, one hundred eleven million, two hundred twelve thousand, eleven".