121321335 has 32 divisors (see below), whose sum is σ = 203645952. Its totient is φ = 61603200.

The previous prime is 121321307. The next prime is 121321339. The reversal of 121321335 is 533123121.

It is not a de Polignac number, because 121321335 - 2¹² = 121317239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23760 + ... + 28410.

It is an arithmetic number, because the mean of its divisors is an integer number (6363936).

Almost surely, 2^121321335 is an apocalyptic number.

121321335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121321335 is a deficient number, since it is larger than the sum of its proper divisors (82324617).

121321335 is a wasteful number, since it uses less digits than its factorization.

121321335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743.

The product of its digits is 540, while the sum is 21.

The square root of 121321335 is about 11014.5964519813. The cubic root of 121321335 is about 495.0461950562.

Adding to 121321335 its reverse (533123121), we get a palindrome (654444456).

The spelling of 121321335 in words is "one hundred twenty-one million, three hundred twenty-one thousand, three hundred thirty-five".