11020121113 has 4 divisors (see below), whose sum is σ = 11054885220. Its totient is φ = 10985357008.

The previous prime is 11020121111. The next prime is 11020121137. The reversal of 11020121113 is 31112102011.

It is a happy number.

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 1988089744 + 9032031369 = 44588^2 + 95037^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020121113 - 2¹ = 11020121111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020121093 and 11020121102.

It is not an unprimeable number, because it can be changed into a prime (11020121111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17381578 + ... + 17382211.

It is an arithmetic number, because the mean of its divisors is an integer number (2763721305).

Almost surely, 2^11020121113 is an apocalyptic number.

It is an amenable number.

11020121113 is a deficient number, since it is larger than the sum of its proper divisors (34764107).

11020121113 is an equidigital number, since it uses as much as digits as its factorization.

11020121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34764106.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11020121113 its reverse (31112102011), we get a palindrome (42132223124).

The spelling of 11020121113 in words is "eleven billion, twenty million, one hundred twenty-one thousand, one hundred thirteen".