10215212 has 12 divisors (see below), whose sum is σ = 20430480. Its totient is φ = 4377936.

The previous prime is 10215211. The next prime is 10215229. The reversal of 10215212 is 21251201.

10215212 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (10215211) 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, 182387 + ... + 182442.

It is an arithmetic number, because the mean of its divisors is an integer number (1702540).

Almost surely, 2^10215212 is an apocalyptic number.

It is an amenable number.

10215212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10215212 is a wasteful number, since it uses less digits than its factorization.

10215212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364840 (or 364838 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 10215212 is about 3196.1245282373. The cubic root of 10215212 is about 216.9780464387.

Adding to 10215212 its reverse (21251201), we get a palindrome (31466413).

The spelling of 10215212 in words is "ten million, two hundred fifteen thousand, two hundred twelve".