10215115 has 4 divisors (see below), whose sum is σ = 12258144. Its totient is φ = 8172088.

The previous prime is 10215067. The next prime is 10215119. The reversal of 10215115 is 51151201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51151201 = 53 ⋅965117.

It is a cyclic number.

It is not a de Polignac number, because 10215115 - 2¹⁹ = 9690827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10215119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021507 + ... + 1021516.

It is an arithmetic number, because the mean of its divisors is an integer number (3064536).

Almost surely, 2^10215115 is an apocalyptic number.

10215115 is a deficient number, since it is larger than the sum of its proper divisors (2043029).

10215115 is an equidigital number, since it uses as much as digits as its factorization.

10215115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043028.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 10215115 is about 3196.1093535735. The cubic root of 10215115 is about 216.9773596545.

Adding to 10215115 its reverse (51151201), we get a palindrome (61366316).

The spelling of 10215115 in words is "ten million, two hundred fifteen thousand, one hundred fifteen".