23121115 has 8 divisors (see below), whose sum is σ = 28495440. Its totient is φ = 17996832.

The previous prime is 23121103. The next prime is 23121127. The reversal of 23121115 is 51112132.

It is an interprime number because it is at equal distance from previous prime (23121103) and next prime (23121127).

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 23121115 - 2¹⁵ = 23088347 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62305 + ... + 62674.

It is an arithmetic number, because the mean of its divisors is an integer number (3561930).

Almost surely, 2^23121115 is an apocalyptic number.

23121115 is a deficient number, since it is larger than the sum of its proper divisors (5374325).

23121115 is a wasteful number, since it uses less digits than its factorization.

23121115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125021.

The product of its digits is 60, while the sum is 16.

The square root of 23121115 is about 4808.4420553855. The cubic root of 23121115 is about 284.8850054179.

Adding to 23121115 its reverse (51112132), we get a palindrome (74233247).

The spelling of 23121115 in words is "twenty-three million, one hundred twenty-one thousand, one hundred fifteen".