121121313 has 32 divisors (see below), whose sum is σ = 173352960. Its totient is φ = 75075840.

The previous prime is 121121293. The next prime is 121121317. The reversal of 121121313 is 313121121.

It is a happy number.

It is not a de Polignac number, because 121121313 - 2⁶ = 121121249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121121292 and 121121301.

It is not an unprimeable number, because it can be changed into a prime (121121317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 614731 + ... + 614927.

It is an arithmetic number, because the mean of its divisors is an integer number (5417280).

Almost surely, 2^121121313 is an apocalyptic number.

It is an amenable number.

121121313 is a deficient number, since it is larger than the sum of its proper divisors (52231647).

121121313 is a wasteful number, since it uses less digits than its factorization.

121121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

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

The square root of 121121313 is about 11005.5128458423. The cubic root of 121121313 is about 494.7739851767.

Adding to 121121313 its reverse (313121121), we get a palindrome (434242434).

The spelling of 121121313 in words is "one hundred twenty-one million, one hundred twenty-one thousand, three hundred thirteen".