121601757 has 8 divisors (see below), whose sum is σ = 162223776. Its totient is φ = 81023792.

The previous prime is 121601743. The next prime is 121601783. The reversal of 121601757 is 757106121.

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 121601757 - 2⁴ = 121601741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121601707) 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, 3918 + ... + 16079.

It is an arithmetic number, because the mean of its divisors is an integer number (20277972).

Almost surely, 2^121601757 is an apocalyptic number.

It is an amenable number.

121601757 is a deficient number, since it is larger than the sum of its proper divisors (40622019).

121601757 is a wasteful number, since it uses less digits than its factorization.

121601757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22027.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 121601757 is about 11027.3186677451. The cubic root of 121601757 is about 495.4273179744.

Adding to 121601757 its reverse (757106121), we get a palindrome (878707878).

The spelling of 121601757 in words is "one hundred twenty-one million, six hundred one thousand, seven hundred fifty-seven".