121125313 has 2 divisors, whose sum is σ = 121125314. Its totient is φ = 121125312.

The previous prime is 121125311. The next prime is 121125317. The reversal of 121125313 is 313521121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118526769 + 2598544 = 10887^2 + 1612^2 .

It is a cyclic number.

It is not a de Polignac number, because 121125313 - 2¹ = 121125311 is a prime.

Together with 121125311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121125311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60562656 + 60562657.

It is an arithmetic number, because the mean of its divisors is an integer number (60562657).

Almost surely, 2^121125313 is an apocalyptic number.

It is an amenable number.

121125313 is a deficient number, since it is larger than the sum of its proper divisors (1).

121125313 is an equidigital number, since it uses as much as digits as its factorization.

121125313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 19.

The square root of 121125313 is about 11005.6945714480. The cubic root of 121125313 is about 494.7794317110.

Adding to 121125313 its reverse (313521121), we get a palindrome (434646434).

The spelling of 121125313 in words is "one hundred twenty-one million, one hundred twenty-five thousand, three hundred thirteen".