121250217 has 8 divisors (see below), whose sum is σ = 176364000. Its totient is φ = 73484960.

The previous prime is 121250209. The next prime is 121250219. The reversal of 121250217 is 712052121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121250217 - 2³ = 121250209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121250193 and 121250202.

It is not an unprimeable number, because it can be changed into a prime (121250219) 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 in 7 ways as a sum of consecutive naturals, for example, 1837092 + ... + 1837157.

It is an arithmetic number, because the mean of its divisors is an integer number (22045500).

Almost surely, 2^121250217 is an apocalyptic number.

It is an amenable number.

121250217 is a deficient number, since it is larger than the sum of its proper divisors (55113783).

121250217 is a wasteful number, since it uses less digits than its factorization.

121250217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674263.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 121250217 is about 11011.3676262306. The cubic root of 121250217 is about 494.9494448930.

The spelling of 121250217 in words is "one hundred twenty-one million, two hundred fifty thousand, two hundred seventeen".