11021110120121 has 2 divisors, whose sum is σ = 11021110120122. Its totient is φ = 11021110120120.

The previous prime is 11021110120103. The next prime is 11021110120123. The reversal of 11021110120121 is 12102101112011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10915332314896 + 105777805225 = 3303836^2 + 325235^2 .

It is an emirp because it is prime and its reverse (12102101112011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021110120121 is a prime.

Together with 11021110120123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021110120096 and 11021110120105.

It is not a weakly prime, because it can be changed into another prime (11021110120123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510555060060 + 5510555060061.

It is an arithmetic number, because the mean of its divisors is an integer number (5510555060061).

Almost surely, 2^{11021110120121} is an apocalyptic number.

It is an amenable number.

11021110120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021110120121 is an equidigital number, since it uses as much as digits as its factorization.

11021110120121 is an evil number, because the sum of its binary digits is even.

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

Adding to 11021110120121 its reverse (12102101112011), we get a palindrome (23123211232132).

The spelling of 11021110120121 in words is "eleven trillion, twenty-one billion, one hundred ten million, one hundred twenty thousand, one hundred twenty-one".