121251 has 8 divisors (see below), whose sum is σ = 174160. Its totient is φ = 74592.
The previous prime is 121229. The next prime is 121259. The reversal of 121251 is 152121.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 121251 - 27 = 121123 is a prime.
It is a Duffinian number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121251.
It is not an unprimeable number, because it can be changed into a prime (121259) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1516 + ... + 1593.
It is an arithmetic number, because the mean of its divisors is an integer number (21770).
2121251 is an apocalyptic number.
121251 is a deficient number, since it is larger than the sum of its proper divisors (52909).
121251 is a wasteful number, since it uses less digits than its factorization.
121251 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3125.
The product of its digits is 20, while the sum is 12.
The square root of 121251 is about 348.2111428430. The cubic root of 121251 is about 49.4950510306.
Adding to 121251 its reverse (152121), we get a palindrome (273372).
The spelling of 121251 in words is "one hundred twenty-one thousand, two hundred fifty-one".
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