111020011000121 has 2 divisors, whose sum is σ = 111020011000122. Its totient is φ = 111020011000120.

The previous prime is 111020011000061. The next prime is 111020011000127. The reversal of 111020011000121 is 121000110020111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89515459710121 + 21504551290000 = 9461261^2 + 4637300^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020011000121 - 2¹⁰ = 111020010999097 is a prime.

It is not a weakly prime, because it can be changed into another prime (111020011000127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510005500060 + 55510005500061.

It is an arithmetic number, because the mean of its divisors is an integer number (55510005500061).

Almost surely, 2^{111020011000121} is an apocalyptic number.

It is an amenable number.

111020011000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020011000121 is an equidigital number, since it uses as much as digits as its factorization.

111020011000121 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 11.

Adding to 111020011000121 its reverse (121000110020111), we get a palindrome (232020121020232).

The spelling of 111020011000121 in words is "one hundred eleven trillion, twenty billion, eleven million, one hundred twenty-one", and thus it is an aban number.