11122120012021 has 2 divisors, whose sum is σ = 11122120012022. Its totient is φ = 11122120012020.

The previous prime is 11122120012009. The next prime is 11122120012037. The reversal of 11122120012021 is 12021002122111.

It is an a-pointer prime, because the next prime (11122120012037) can be obtained adding 11122120012021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9634573889521 + 1487546122500 = 3103961^2 + 1219650^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122120012021 - 2¹³ = 11122120003829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11122120011986 and 11122120012004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122120012121) 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, 5561060006010 + 5561060006011.

It is an arithmetic number, because the mean of its divisors is an integer number (5561060006011).

Almost surely, 2^{11122120012021} is an apocalyptic number.

It is an amenable number.

11122120012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122120012021 is an equidigital number, since it uses as much as digits as its factorization.

11122120012021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11122120012021 its reverse (12021002122111), we get a palindrome (23143122134132).

The spelling of 11122120012021 in words is "eleven trillion, one hundred twenty-two billion, one hundred twenty million, twelve thousand, twenty-one".