22113605 has 8 divisors (see below), whose sum is σ = 27253752. Its totient is φ = 17212608.

The previous prime is 22113577. The next prime is 22113643. The reversal of 22113605 is 50631122.

It can be written as a sum of positive squares in 4 ways, for example, as 5678689 + 16434916 = 2383^2 + 4054^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22113605 - 2⁶ = 22113541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59582 + ... + 59951.

It is an arithmetic number, because the mean of its divisors is an integer number (3406719).

Almost surely, 2^22113605 is an apocalyptic number.

It is an amenable number.

22113605 is a deficient number, since it is larger than the sum of its proper divisors (5140147).

22113605 is a wasteful number, since it uses less digits than its factorization.

22113605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119575.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22113605 is about 4702.5104997225. The cubic root of 22113605 is about 280.6854168755.

Adding to 22113605 its reverse (50631122), we get a palindrome (72744727).

The spelling of 22113605 in words is "twenty-two million, one hundred thirteen thousand, six hundred five".