121140121 has 2 divisors, whose sum is σ = 121140122. Its totient is φ = 121140120.

The previous prime is 121140091. The next prime is 121140137. The reversal of 121140121 is 121041121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117939600 + 3200521 = 10860^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 121140121 - 2¹³ = 121131929 is a prime.

It is a super-3 number, since 3×121140121³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (121140161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60570060 + 60570061.

It is an arithmetic number, because the mean of its divisors is an integer number (60570061).

Almost surely, 2^121140121 is an apocalyptic number.

It is an amenable number.

121140121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121140121 is an equidigital number, since it uses as much as digits as its factorization.

121140121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 121140121 is about 11006.3672935261. The cubic root of 121140121 is about 494.7995937374.

Adding to 121140121 its reverse (121041121), we get a palindrome (242181242).

The spelling of 121140121 in words is "one hundred twenty-one million, one hundred forty thousand, one hundred twenty-one".