11021121113 has 4 divisors (see below), whose sum is σ = 11066852148. Its totient is φ = 10975390080.

The previous prime is 11021121109. The next prime is 11021121151. The reversal of 11021121113 is 31112112011.

11021121113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8044654864 + 2976466249 = 89692^2 + 54557^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021121113 - 2² = 11021121109 is a prime.

It is a super-2 number, since 2×11021121113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22865156 + ... + 22865637.

It is an arithmetic number, because the mean of its divisors is an integer number (2766713037).

Almost surely, 2^11021121113 is an apocalyptic number.

It is an amenable number.

11021121113 is a deficient number, since it is larger than the sum of its proper divisors (45731035).

11021121113 is an equidigital number, since it uses as much as digits as its factorization.

11021121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45731034.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11021121113 its reverse (31112112011), we get a palindrome (42133233124).

The spelling of 11021121113 in words is "eleven billion, twenty-one million, one hundred twenty-one thousand, one hundred thirteen".