121113321 has 64 divisors (see below), whose sum is σ = 205659648. Its totient is φ = 61820928.

The previous prime is 121113319. The next prime is 121113329. The reversal of 121113321 is 123311121.

It is a happy number.

It is not a de Polignac number, because 121113321 - 2¹ = 121113319 is a prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 121113321.

It is not an unprimeable number, because it can be changed into a prime (121113329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 699991 + ... + 700163.

It is an arithmetic number, because the mean of its divisors is an integer number (3213432).

Almost surely, 2^121113321 is an apocalyptic number.

It is an amenable number.

121113321 is a deficient number, since it is larger than the sum of its proper divisors (84546327).

121113321 is a wasteful number, since it uses less digits than its factorization.

121113321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

The product of its digits is 36, while the sum is 15.

The square root of 121113321 is about 11005.1497490947. The cubic root of 121113321 is about 494.7631026420.

Adding to 121113321 its reverse (123311121), we get a palindrome (244424442).

The spelling of 121113321 in words is "one hundred twenty-one million, one hundred thirteen thousand, three hundred twenty-one".