121011043 has 2 divisors, whose sum is σ = 121011044. Its totient is φ = 121011042.

The previous prime is 121011017. The next prime is 121011071. The reversal of 121011043 is 340110121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121011043 - 2¹³ = 121002851 is a prime.

It is not a weakly prime, because it can be changed into another prime (121011013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505521 + 60505522.

It is an arithmetic number, because the mean of its divisors is an integer number (60505522).

Almost surely, 2^121011043 is an apocalyptic number.

121011043 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011043 is an equidigital number, since it uses as much as digits as its factorization.

121011043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121011043 is about 11000.5019430933. The cubic root of 121011043 is about 494.6237906009.

Adding to 121011043 its reverse (340110121), we get a palindrome (461121164).

The spelling of 121011043 in words is "one hundred twenty-one million, eleven thousand, forty-three".