1101111221011 has 8 divisors (see below), whose sum is σ = 1106555670000. Its totient is φ = 1095680101152.

The previous prime is 1101111220969. The next prime is 1101111221051. The reversal of 1101111221011 is 1101221111011.

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

It is a cyclic number.

It is not a de Polignac number, because 1101111221011 - 2⁷ = 1101111220883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101111220982 and 1101111221000.

It is not an unprimeable number, because it can be changed into a prime (1101111221051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3166636 + ... + 3497113.

It is an arithmetic number, because the mean of its divisors is an integer number (138319458750).

Almost surely, 2^{1101111221011} is an apocalyptic number.

1101111221011 is a deficient number, since it is larger than the sum of its proper divisors (5444448989).

1101111221011 is an equidigital number, since it uses as much as digits as its factorization.

1101111221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664565.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1101111221011 its reverse (1101221111011), we get a palindrome (2202332332022).

The spelling of 1101111221011 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, eleven".