212215410 has 64 divisors (see below), whose sum is σ = 617362560. Its totient is φ = 51445440.

The previous prime is 212215361. The next prime is 212215433. The reversal of 212215410 is 14512212.

212215410 is a `hidden beast` number, since 2 + 122 + 1 + 541 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 11.

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 31 ways as a sum of consecutive naturals, for example, 32757 + ... + 38696.

It is an arithmetic number, because the mean of its divisors is an integer number (9646290).

Almost surely, 2^212215410 is an apocalyptic number.

212215410 is an abundant number, since it is smaller than the sum of its proper divisors (405147150).

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

212215410 is a wasteful number, since it uses less digits than its factorization.

212215410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71480 (or 71474 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 212215410 is about 14567.6151102368. The cubic root of 212215410 is about 596.4750821432.

Adding to 212215410 its reverse (14512212), we get a palindrome (226727622).

The spelling of 212215410 in words is "two hundred twelve million, two hundred fifteen thousand, four hundred ten".