10212666 has 32 divisors (see below), whose sum is σ = 21176640. Its totient is φ = 3280896.

The previous prime is 10212659. The next prime is 10212691. The reversal of 10212666 is 66621201.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39610 + ... + 39866.

It is an arithmetic number, because the mean of its divisors is an integer number (661770).

Almost surely, 2^10212666 is an apocalyptic number.

10212666 is an abundant number, since it is smaller than the sum of its proper divisors (10963974).

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

10212666 is a wasteful number, since it uses less digits than its factorization.

10212666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 10212666 is about 3195.7262085479. The cubic root of 10212666 is about 216.9600186840.

Adding to 10212666 its reverse (66621201), we get a palindrome (76833867).

It can be divided in two parts, 10212 and 666, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 10212666 in words is "ten million, two hundred twelve thousand, six hundred sixty-six".