121617307 has 8 divisors (see below), whose sum is σ = 145034496. Its totient is φ = 99710952.

The previous prime is 121617299. The next prime is 121617311. The reversal of 121617307 is 703716121.

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 121617307 - 2³ = 121617299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121617317) 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, 377533 + ... + 377854.

It is an arithmetic number, because the mean of its divisors is an integer number (18129312).

Almost surely, 2^121617307 is an apocalyptic number.

121617307 is a deficient number, since it is larger than the sum of its proper divisors (23417189).

121617307 is an equidigital number, since it uses as much as digits as its factorization.

121617307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755417.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 121617307 is about 11028.0237123430. The cubic root of 121617307 is about 495.4484349018.

The spelling of 121617307 in words is "one hundred twenty-one million, six hundred seventeen thousand, three hundred seven".