121601620717 has 8 divisors (see below), whose sum is σ = 121881142400. Its totient is φ = 121322279520.

The previous prime is 121601620709. The next prime is 121601620733. The reversal of 121601620717 is 717026106121.

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 121601620717 - 2³ = 121601620709 is a prime.

It is a super-2 number, since 2×121601620717² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121601621717) 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, 1353409 + ... + 1440457.

It is an arithmetic number, because the mean of its divisors is an integer number (15235142800).

Almost surely, 2^121601620717 is an apocalyptic number.

It is an amenable number.

121601620717 is a deficient number, since it is larger than the sum of its proper divisors (279521683).

121601620717 is an equidigital number, since it uses as much as digits as its factorization.

121601620717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90243.

The product of its (nonzero) digits is 7056, while the sum is 34.

Adding to 121601620717 its reverse (717026106121), we get a palindrome (838627726838).

The spelling of 121601620717 in words is "one hundred twenty-one billion, six hundred one million, six hundred twenty thousand, seven hundred seventeen".