22101606 has 16 divisors (see below), whose sum is σ = 49114800. Its totient is φ = 7367184.

The previous prime is 22101571. The next prime is 22101623. The reversal of 22101606 is 60610122.

It is a happy number.

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

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 7 ways as a sum of consecutive naturals, for example, 204591 + ... + 204698.

It is an arithmetic number, because the mean of its divisors is an integer number (3069675).

Almost surely, 2^22101606 is an apocalyptic number.

22101606 is an abundant number, since it is smaller than the sum of its proper divisors (27013194).

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

22101606 is a wasteful number, since it uses less digits than its factorization.

22101606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409300 (or 409294 counting only the distinct ones).

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

The square root of 22101606 is about 4701.2345187195. The cubic root of 22101606 is about 280.6346403865.

Adding to 22101606 its reverse (60610122), we get a palindrome (82711728).

The spelling of 22101606 in words is "twenty-two million, one hundred one thousand, six hundred six".