121315 has 8 divisors (see below), whose sum is σ = 153360. Its totient is φ = 91872.

The previous prime is 121313. The next prime is 121321. The reversal of 121315 is 513121.

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 121315 - 2¹ = 121313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121295 and 121304.

It is not an unprimeable number, because it can be changed into a prime (121313) 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 7 ways as a sum of consecutive naturals, for example, 544 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (19170).

2¹²¹³¹⁵ is an apocalyptic number.

121315 is a deficient number, since it is larger than the sum of its proper divisors (32045).

121315 is a wasteful number, since it uses less digits than its factorization.

121315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301.

The product of its digits is 30, while the sum is 13.

The square root of 121315 is about 348.3030289848. The cubic root of 121315 is about 49.5037578346.

Adding to 121315 its reverse (513121), we get a palindrome (634436).

It can be divided in two parts, 1 and 21315, that added together give a square (21316 = 146²).

The spelling of 121315 in words is "one hundred twenty-one thousand, three hundred fifteen".