22727201 has 4 divisors (see below), whose sum is σ = 25973952. Its totient is φ = 19480452.

The previous prime is 22727191. The next prime is 22727203. The reversal of 22727201 is 10272722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10272722 = 2 ⋅5136361.

It is a cyclic number.

It is not a de Polignac number, because 22727201 - 2²² = 18532897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22727203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623365 + ... + 1623378.

It is an arithmetic number, because the mean of its divisors is an integer number (6493488).

Almost surely, 2^22727201 is an apocalyptic number.

It is an amenable number.

22727201 is a deficient number, since it is larger than the sum of its proper divisors (3246751).

22727201 is an equidigital number, since it uses as much as digits as its factorization.

22727201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246750.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 22727201 is about 4767.3054234022. The cubic root of 22727201 is about 283.2578694834.

Adding to 22727201 its reverse (10272722), we get a palindrome (32999923).

The spelling of 22727201 in words is "twenty-two million, seven hundred twenty-seven thousand, two hundred one".