1101211101011 has 12 divisors (see below), whose sum is σ = 1294206866568. Its totient is φ = 934164346752.

The previous prime is 1101211100953. The next prime is 1101211101043. The reversal of 1101211101011 is 1101011121011.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1101211101011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101211100983 and 1101211101001.

It is not an unprimeable number, because it can be changed into a prime (1101211121011) 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 in 11 ways as a sum of consecutive naturals, for example, 115839041 + ... + 115848546.

It is an arithmetic number, because the mean of its divisors is an integer number (107850572214).

Almost surely, 2^{1101211101011} is an apocalyptic number.

1101211101011 is a deficient number, since it is larger than the sum of its proper divisors (192995765557).

1101211101011 is an equidigital number, since it uses as much as digits as its factorization.

1101211101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231687698 (or 231687691 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1101211101011 its reverse (1101011121011), we get a palindrome (2202222222022).

The spelling of 1101211101011 in words is "one trillion, one hundred one billion, two hundred eleven million, one hundred one thousand, eleven".