121336885 has 4 divisors (see below), whose sum is σ = 145604268. Its totient is φ = 97069504.

The previous prime is 121336879. The next prime is 121336889. The reversal of 121336885 is 588633121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33895684 + 87441201 = 5822^2 + 9351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121336885 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 (121336889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12133684 + ... + 12133693.

It is an arithmetic number, because the mean of its divisors is an integer number (36401067).

Almost surely, 2^121336885 is an apocalyptic number.

It is an amenable number.

121336885 is a deficient number, since it is larger than the sum of its proper divisors (24267383).

121336885 is an equidigital number, since it uses as much as digits as its factorization.

121336885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24267382.

The product of its digits is 34560, while the sum is 37.

The square root of 121336885 is about 11015.3023108764. The cubic root of 121336885 is about 495.0673445088.

It can be divided in two parts, 121336 and 885, that added together give a palindrome (122221).

The spelling of 121336885 in words is "one hundred twenty-one million, three hundred thirty-six thousand, eight hundred eighty-five".