121888159 has 8 divisors (see below), whose sum is σ = 124554240. Its totient is φ = 119242200.

The previous prime is 121888141. The next prime is 121888171. The reversal of 121888159 is 951888121.

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 121888159 - 2⁷ = 121888031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121883159) 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, 7554 + ... + 17344.

It is an arithmetic number, because the mean of its divisors is an integer number (15569280).

Almost surely, 2^121888159 is an apocalyptic number.

121888159 is a deficient number, since it is larger than the sum of its proper divisors (2666081).

121888159 is an equidigital number, since it uses as much as digits as its factorization.

121888159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061.

The product of its digits is 46080, while the sum is 43.

The square root of 121888159 is about 11040.2970521630. The cubic root of 121888159 is about 495.8159640143.

The spelling of 121888159 in words is "one hundred twenty-one million, eight hundred eighty-eight thousand, one hundred fifty-nine".