121134289 has 2 divisors, whose sum is σ = 121134290. Its totient is φ = 121134288.

The previous prime is 121134287. The next prime is 121134341. The reversal of 121134289 is 982431121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107993664 + 13140625 = 10392^2 + 3625^2 .

It is a cyclic number.

It is not a de Polignac number, because 121134289 - 2¹ = 121134287 is a prime.

Together with 121134287, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121134289.

It is not a weakly prime, because it can be changed into another prime (121134281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60567144 + 60567145.

It is an arithmetic number, because the mean of its divisors is an integer number (60567145).

Almost surely, 2^121134289 is an apocalyptic number.

It is an amenable number.

121134289 is a deficient number, since it is larger than the sum of its proper divisors (1).

121134289 is an equidigital number, since it uses as much as digits as its factorization.

121134289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 121134289 is about 11006.1023527859. The cubic root of 121134289 is about 494.7916532975.

The spelling of 121134289 in words is "one hundred twenty-one million, one hundred thirty-four thousand, two hundred eighty-nine".