121365535 has 8 divisors (see below), whose sum is σ = 149191056. Its totient is φ = 94724160.

The previous prime is 121365511. The next prime is 121365557. The reversal of 121365535 is 535563121.

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

It is not a de Polignac number, because 121365535 - 2¹⁵ = 121332767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121365497 and 121365506.

It is a congruent number.

It is an unprimeable number.

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, 295809 + ... + 296218.

It is an arithmetic number, because the mean of its divisors is an integer number (18648882).

Almost surely, 2^121365535 is an apocalyptic number.

121365535 is a deficient number, since it is larger than the sum of its proper divisors (27825521).

121365535 is an equidigital number, since it uses as much as digits as its factorization.

121365535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592073.

The product of its digits is 13500, while the sum is 31.

The square root of 121365535 is about 11016.6026977467. The cubic root of 121365535 is about 495.1063064541.

It can be divided in two parts, 12136 and 5535, that added together give a palindrome (17671).

The spelling of 121365535 in words is "one hundred twenty-one million, three hundred sixty-five thousand, five hundred thirty-five".