1111211121133 has 4 divisors (see below), whose sum is σ = 1111599523548. Its totient is φ = 1110822718720.

The previous prime is 1111211121121. The next prime is 1111211121221. The reversal of 1111211121133 is 3311211121111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 733278804489 + 377932316644 = 856317^2 + 614762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111211121133 - 2¹³ = 1111211112941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111211121133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211151133) 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 3 ways as a sum of consecutive naturals, for example, 194196916 + ... + 194202637.

It is an arithmetic number, because the mean of its divisors is an integer number (277899880887).

Almost surely, 2^{1111211121133} is an apocalyptic number.

It is an amenable number.

1111211121133 is a deficient number, since it is larger than the sum of its proper divisors (388402415).

1111211121133 is an equidigital number, since it uses as much as digits as its factorization.

1111211121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388402414.

The product of its digits is 36, while the sum is 19.

Adding to 1111211121133 its reverse (3311211121111), we get a palindrome (4422422242244).

The spelling of 1111211121133 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty-one thousand, one hundred thirty-three".