22122201 has 4 divisors (see below), whose sum is σ = 29496272. Its totient is φ = 14748132.

The previous prime is 22122173. The next prime is 22122203. The reversal of 22122201 is 10222122.

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.

It is not a de Polignac number, because 22122201 - 2⁵ = 22122169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122203) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3687031 + ... + 3687036.

It is an arithmetic number, because the mean of its divisors is an integer number (7374068).

Almost surely, 2^22122201 is an apocalyptic number.

It is an amenable number.

22122201 is a deficient number, since it is larger than the sum of its proper divisors (7374071).

22122201 is an equidigital number, since it uses as much as digits as its factorization.

22122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7374070.

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

The square root of 22122201 is about 4703.4243908029. The cubic root of 22122201 is about 280.7217815068.

Adding to 22122201 its reverse (10222122), we get a palindrome (32344323).

It can be divided in two parts, 221 and 22201, that added together give a palindrome (22422).

The spelling of 22122201 in words is "twenty-two million, one hundred twenty-two thousand, two hundred one".