121888311 has 8 divisors (see below), whose sum is σ = 167760384. Its totient is φ = 78637560.

The previous prime is 121888297. The next prime is 121888337. The reversal of 121888311 is 113888121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121888311 - 2⁵ = 121888279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121888381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655221 + ... + 655406.

It is an arithmetic number, because the mean of its divisors is an integer number (20970048).

Almost surely, 2^121888311 is an apocalyptic number.

121888311 is a deficient number, since it is larger than the sum of its proper divisors (45872073).

121888311 is a wasteful number, since it uses less digits than its factorization.

121888311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310661.

The product of its digits is 3072, while the sum is 33.

The square root of 121888311 is about 11040.3039360336. The cubic root of 121888311 is about 495.8161701158.

The spelling of 121888311 in words is "one hundred twenty-one million, eight hundred eighty-eight thousand, three hundred eleven".