11120110021 has 2 divisors, whose sum is σ = 11120110022. Its totient is φ = 11120110020.

The previous prime is 11120110013. The next prime is 11120110051. The reversal of 11120110021 is 12001102111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8410907521 + 2709202500 = 91711^2 + 52050^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120110021 - 2³ = 11120110013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11120110051) 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 as a sum of consecutive naturals, namely, 5560055010 + 5560055011.

It is an arithmetic number, because the mean of its divisors is an integer number (5560055011).

Almost surely, 2^11120110021 is an apocalyptic number.

It is an amenable number.

11120110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120110021 is an equidigital number, since it uses as much as digits as its factorization.

11120110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11120110021 its reverse (12001102111), we get a palindrome (23121212132).

The spelling of 11120110021 in words is "eleven billion, one hundred twenty million, one hundred ten thousand, twenty-one".