11011022020121 has 4 divisors (see below), whose sum is σ = 11308617209892. Its totient is φ = 10713426830352.

The previous prime is 11011022020081. The next prime is 11011022020157. The reversal of 11011022020121 is 12102022011011.

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 3990965107600 + 7020056912521 = 1997740^2 + 2649539^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11011022020121 is a prime.

It is a super-3 number, since 3×11011022020121³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011022020096 and 11011022020105.

It is not an unprimeable number, because it can be changed into a prime (11011022020721) 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, 148797594830 + ... + 148797594903.

It is an arithmetic number, because the mean of its divisors is an integer number (2827154302473).

Almost surely, 2^{11011022020121} is an apocalyptic number.

It is an amenable number.

11011022020121 is a deficient number, since it is larger than the sum of its proper divisors (297595189771).

11011022020121 is an equidigital number, since it uses as much as digits as its factorization.

11011022020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297595189770.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11011022020121 its reverse (12102022011011), we get a palindrome (23113044031132).

The spelling of 11011022020121 in words is "eleven trillion, eleven billion, twenty-two million, twenty thousand, one hundred twenty-one".