11011022120221 has 8 divisors (see below), whose sum is σ = 11013547496184. Its totient is φ = 11008497050880.

The previous prime is 11011022120141. The next prime is 11011022120237. The reversal of 11011022120221 is 12202122011011.

It can be written as a sum of positive squares in 4 ways, for example, as 237436925625 + 10773585194596 = 487275^2 + 3282314^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11011022120221 - 2⁷ = 11011022120093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011022120195 and 11011022120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011022120251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81350161 + ... + 81485401.

It is an arithmetic number, because the mean of its divisors is an integer number (1376693437023).

Almost surely, 2^{11011022120221} is an apocalyptic number.

It is an amenable number.

11011022120221 is a deficient number, since it is larger than the sum of its proper divisors (2525375963).

11011022120221 is an equidigital number, since it uses as much as digits as its factorization.

11011022120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153311.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11011022120221 its reverse (12202122011011), we get a palindrome (23213144131232).

The spelling of 11011022120221 in words is "eleven trillion, eleven billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".