121507 has 2 divisors, whose sum is σ = 121508.
Its totient is φ = 121506.
The previous prime is 121501. The next prime is 121523. The reversal of 121507 is 705121.
Adding to 121507 its reverse (705121), we get a palindrome (826628).
It is an a-pointer prime, because the next prime (121523) can be obtained adding 121507 to its sum of digits (16).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 121507 - 27 = 121379 is a prime.
It is a nialpdrome in base 11.
It is not a weakly prime, because it can be changed into another prime (121501) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60753 + 60754.
It is an arithmetic number, because the mean of its divisors is an integer number (60754).
2121507 is an apocalyptic number.
121507 is a deficient number, since it is larger than the sum of its proper divisors (1).
121507 is an equidigital number, since it uses as much as digits as its factorization.
121507 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 70, while the sum is 16.
The square root of 121507 is about 348.5785420820.
The cubic root of 121507 is about 49.5298598876.
The spelling of 121507 in words is "one hundred twenty-one thousand, five hundred seven".