1001111120211 has 12 divisors (see below), whose sum is σ = 1371865938072. Its totient is φ = 649369372608.

The previous prime is 1001111120209. The next prime is 1001111120231. The reversal of 1001111120211 is 1120211111001.

It is not a de Polignac number, because 1001111120211 - 2¹ = 1001111120209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001111120231) 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 11 ways as a sum of consecutive naturals, for example, 121874530 + ... + 121882743.

It is an arithmetic number, because the mean of its divisors is an integer number (114322161506).

Almost surely, 2^{1001111120211} is an apocalyptic number.

1001111120211 is a deficient number, since it is larger than the sum of its proper divisors (370754817861).

1001111120211 is an equidigital number, since it uses as much as digits as its factorization.

1001111120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243757350 (or 243757313 counting only the distinct ones).

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

Adding to 1001111120211 its reverse (1120211111001), we get a palindrome (2121322231212).

The spelling of 1001111120211 in words is "one trillion, one billion, one hundred eleven million, one hundred twenty thousand, two hundred eleven".