121636317 has 8 divisors (see below), whose sum is σ = 176925600. Its totient is φ = 73718960.

The previous prime is 121636303. The next prime is 121636321. The reversal of 121636317 is 713636121.

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 121636317 - 2⁸ = 121636061 is a prime.

It is a super-4 number, since 4×121636317⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121636337) 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, 1842942 + ... + 1843007.

It is an arithmetic number, because the mean of its divisors is an integer number (22115700).

Almost surely, 2^121636317 is an apocalyptic number.

It is an amenable number.

121636317 is a deficient number, since it is larger than the sum of its proper divisors (55289283).

121636317 is a wasteful number, since it uses less digits than its factorization.

121636317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685963.

The product of its digits is 4536, while the sum is 30.

The square root of 121636317 is about 11028.8855738012. The cubic root of 121636317 is about 495.4742480701.

The spelling of 121636317 in words is "one hundred twenty-one million, six hundred thirty-six thousand, three hundred seventeen".