22201603 has 4 divisors (see below), whose sum is σ = 22218280. Its totient is φ = 22184928.

The previous prime is 22201579. The next prime is 22201661. The reversal of 22201603 is 30610222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30610222 = 2 ⋅15305111.

It is a cyclic number.

It is not a de Polignac number, because 22201603 - 2¹³ = 22193411 is a prime.

It is a super-2 number, since 2×22201603² = 985822351539218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22201903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6150 + ... + 9067.

It is an arithmetic number, because the mean of its divisors is an integer number (5554570).

Almost surely, 2^22201603 is an apocalyptic number.

22201603 is a deficient number, since it is larger than the sum of its proper divisors (16677).

22201603 is a wasteful number, since it uses less digits than its factorization.

22201603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16676.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22201603 is about 4711.8577015865. The cubic root of 22201603 is about 281.0572402315.

Adding to 22201603 its reverse (30610222), we get a palindrome (52811825).

The spelling of 22201603 in words is "twenty-two million, two hundred one thousand, six hundred three".