101215 has 8 divisors (see below), whose sum is σ = 125568. Its totient is φ = 78240.

The previous prime is 101209. The next prime is 101221. The reversal of 101215 is 512101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (101209) and next prime (101221).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101215 - 2³ = 101207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 172 + ... + 481.

It is an arithmetic number, because the mean of its divisors is an integer number (15696).

2¹⁰¹²¹⁵ is an apocalyptic number.

101215 is a deficient number, since it is larger than the sum of its proper divisors (24353).

101215 is an equidigital number, since it uses as much as digits as its factorization.

101215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 101215 is about 318.1430495862. The cubic root of 101215 is about 46.6031164450.

Adding to 101215 its reverse (512101), we get a palindrome (613316).

It can be divided in two parts, 10121 and 5, that multiplied together give a palindrome (50605).

The spelling of 101215 in words is "one hundred one thousand, two hundred fifteen".