121313635 has 8 divisors (see below), whose sum is σ = 145635840. Its totient is φ = 97011264.

The previous prime is 121313611. The next prime is 121313671. The reversal of 121313635 is 536313121.

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 121313635 - 2⁵ = 121313603 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19294 + ... + 24796.

It is an arithmetic number, because the mean of its divisors is an integer number (18204480).

Almost surely, 2^121313635 is an apocalyptic number.

121313635 is a deficient number, since it is larger than the sum of its proper divisors (24322205).

121313635 is an equidigital number, since it uses as much as digits as its factorization.

121313635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9917.

The product of its digits is 1620, while the sum is 25.

The square root of 121313635 is about 11014.2469102522. The cubic root of 121313635 is about 495.0357216679.

Adding to 121313635 its reverse (536313121), we get a palindrome (657626756).

The spelling of 121313635 in words is "one hundred twenty-one million, three hundred thirteen thousand, six hundred thirty-five".