10221606 has 32 divisors (see below), whose sum is σ = 23034720. Its totient is φ = 3359232.

The previous prime is 10221571. The next prime is 10221619. The reversal of 10221606 is 60612201.

It is a happy number.

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

10221606 is a modest number, since divided by 1606 gives 1022 as remainder.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2646 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (719835).

Almost surely, 2^10221606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10221606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11517360).

10221606 is an abundant number, since it is smaller than the sum of its proper divisors (12813114).

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

10221606 is a wasteful number, since it uses less digits than its factorization.

10221606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677 (or 2671 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 10221606 is about 3197.1246456777. The cubic root of 10221606 is about 217.0233079652.

Adding to 10221606 its reverse (60612201), we get a palindrome (70833807).

It can be divided in two parts, 1022 and 1606, that added together give a triangular number (2628 = T₇₂).

The spelling of 10221606 in words is "ten million, two hundred twenty-one thousand, six hundred six".