121550117 has 8 divisors (see below), whose sum is σ = 134093400. Its totient is φ = 109463040.

The previous prime is 121550081. The next prime is 121550123. The reversal of 121550117 is 711055121.

It can be written as a sum of positive squares in 4 ways, for example, as 1406596 + 120143521 = 1186^2 + 10961^2 .

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 121550117 - 2²² = 117355813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121550092 and 121550101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121550617) 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, 113492 + ... + 114557.

It is an arithmetic number, because the mean of its divisors is an integer number (16761675).

Almost surely, 2^121550117 is an apocalyptic number.

It is an amenable number.

121550117 is a deficient number, since it is larger than the sum of its proper divisors (12543283).

121550117 is a wasteful number, since it uses less digits than its factorization.

121550117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228103.

The product of its (nonzero) digits is 350, while the sum is 23.

The square root of 121550117 is about 11024.9769614272. The cubic root of 121550117 is about 495.3571778445.

The spelling of 121550117 in words is "one hundred twenty-one million, five hundred fifty thousand, one hundred seventeen".