11021101021121 has 4 divisors (see below), whose sum is σ = 11021445365700. Its totient is φ = 11020756676544.

The previous prime is 11021101021111. The next prime is 11021101021331. The reversal of 11021101021121 is 12112010112011.

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 102999916096 + 10918101105025 = 320936^2 + 3304255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021101021121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021101021096 and 11021101021105.

It is not an unprimeable number, because it can be changed into a prime (11021101021111) 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, 172124276 + ... + 172188293.

It is an arithmetic number, because the mean of its divisors is an integer number (2755361341425).

Almost surely, 2^{11021101021121} is an apocalyptic number.

It is an amenable number.

11021101021121 is a deficient number, since it is larger than the sum of its proper divisors (344344579).

11021101021121 is an equidigital number, since it uses as much as digits as its factorization.

11021101021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344344578.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11021101021121 its reverse (12112010112011), we get a palindrome (23133111133132).

The spelling of 11021101021121 in words is "eleven trillion, twenty-one billion, one hundred one million, twenty-one thousand, one hundred twenty-one".