10001215 has 8 divisors (see below), whose sum is σ = 13716000. Its totient is φ = 6857952.

The previous prime is 10001213. The next prime is 10001221. The reversal of 10001215 is 51210001.

It is a happy number.

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 10001215 - 2¹ = 10001213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142840 + ... + 142909.

It is an arithmetic number, because the mean of its divisors is an integer number (1714500).

Almost surely, 2^10001215 is an apocalyptic number.

10001215 is a deficient number, since it is larger than the sum of its proper divisors (3714785).

10001215 is an equidigital number, since it uses as much as digits as its factorization.

10001215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285761.

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

The square root of 10001215 is about 3162.4697627013. The cubic root of 10001215 is about 215.4521941103.

Adding to 10001215 its reverse (51210001), we get a palindrome (61211216).

The spelling of 10001215 in words is "ten million, one thousand, two hundred fifteen".