22221201 has 8 divisors (see below), whose sum is σ = 30429184. Its totient is φ = 14413680.

The previous prime is 22221191. The next prime is 22221209. The reversal of 22221201 is 10212222.

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

It is not a de Polignac number, because 22221201 - 2¹⁷ = 22090129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99985 + ... + 100206.

It is an arithmetic number, because the mean of its divisors is an integer number (3803648).

Almost surely, 2^22221201 is an apocalyptic number.

It is an amenable number.

22221201 is a deficient number, since it is larger than the sum of its proper divisors (8207983).

22221201 is a wasteful number, since it uses less digits than its factorization.

22221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200231.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22221201 is about 4713.9368896921. The cubic root of 22221201 is about 281.1399150404.

Adding to 22221201 its reverse (10212222), we get a palindrome (32433423).

It can be divided in two parts, 22221 and 201, that added together give a palindrome (22422).

The spelling of 22221201 in words is "twenty-two million, two hundred twenty-one thousand, two hundred one".