121517601 has 8 divisors (see below), whose sum is σ = 163457760. Its totient is φ = 80294592.

The previous prime is 121517593. The next prime is 121517609. The reversal of 121517601 is 106715121.

It is an interprime number because it is at equal distance from previous prime (121517593) and next prime (121517609).

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

It is not a de Polignac number, because 121517601 - 2³ = 121517593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121517609) 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, 178891 + ... + 179568.

It is an arithmetic number, because the mean of its divisors is an integer number (20432220).

Almost surely, 2^121517601 is an apocalyptic number.

It is an amenable number.

121517601 is a deficient number, since it is larger than the sum of its proper divisors (41940159).

121517601 is a wasteful number, since it uses less digits than its factorization.

121517601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358575.

The product of its (nonzero) digits is 420, while the sum is 24.

The square root of 121517601 is about 11023.5022111850. The cubic root of 121517601 is about 495.3130027315.

The spelling of 121517601 in words is "one hundred twenty-one million, five hundred seventeen thousand, six hundred one".