121098717 has 6 divisors (see below), whose sum is σ = 174920382. Its totient is φ = 80732472.

The previous prime is 121098713. The next prime is 121098727. The reversal of 121098717 is 717890121.

It can be written as a sum of positive squares in only one way, i.e., 103002201 + 18096516 = 10149^2 + 4254^2 .

It is not a de Polignac number, because 121098717 - 2² = 121098713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121098713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6727698 + ... + 6727715.

It is an arithmetic number, because the mean of its divisors is an integer number (29153397).

Almost surely, 2^121098717 is an apocalyptic number.

It is an amenable number.

121098717 is a deficient number, since it is larger than the sum of its proper divisors (53821665).

121098717 is a wasteful number, since it uses less digits than its factorization.

121098717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13455419 (or 13455416 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 121098717 is about 11004.4862215371. The cubic root of 121098717 is about 494.7432154522.

The spelling of 121098717 in words is "one hundred twenty-one million, ninety-eight thousand, seven hundred seventeen".