121140091 has 2 divisors, whose sum is σ = 121140092. Its totient is φ = 121140090.

The previous prime is 121140059. The next prime is 121140121. The reversal of 121140091 is 190041121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121140091 - 2⁵ = 121140059 is a prime.

It is a super-3 number, since 3×121140091³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (121140191) 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, 60570045 + 60570046.

It is an arithmetic number, because the mean of its divisors is an integer number (60570046).

Almost surely, 2^121140091 is an apocalyptic number.

121140091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121140091 is an equidigital number, since it uses as much as digits as its factorization.

121140091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 121140091 is about 11006.3659306785. The cubic root of 121140091 is about 494.7995528921.

The spelling of 121140091 in words is "one hundred twenty-one million, one hundred forty thousand, ninety-one".