11334555121 has 4 divisors (see below), whose sum is σ = 11335098852. Its totient is φ = 11334011392.

The previous prime is 11334555103. The next prime is 11334555149. The reversal of 11334555121 is 12155543311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12155543311 = 3191 ⋅3809321.

It can be written as a sum of positive squares in 2 ways, for example, as 2225952400 + 9108602721 = 47180^2 + 95439^2 .

It is a cyclic number.

It is not a de Polignac number, because 11334555121 - 2¹¹ = 11334553073 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11334555101) 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, 239296 + ... + 282721.

It is an arithmetic number, because the mean of its divisors is an integer number (2833774713).

Almost surely, 2^11334555121 is an apocalyptic number.

It is an amenable number.

11334555121 is a deficient number, since it is larger than the sum of its proper divisors (543731).

11334555121 is an equidigital number, since it uses as much as digits as its factorization.

11334555121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543730.

The product of its digits is 9000, while the sum is 31.

The spelling of 11334555121 in words is "eleven billion, three hundred thirty-four million, five hundred fifty-five thousand, one hundred twenty-one".