22155201 has 10 divisors (see below), whose sum is σ = 33096162. Its totient is φ = 14770080.

The previous prime is 22155179. The next prime is 22155209. The reversal of 22155201 is 10255122.

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 1498176 = 4545^2 + 1224^2 .

It is not a de Polignac number, because 22155201 - 2⁵ = 22155169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22155209) 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 9 ways as a sum of consecutive naturals, for example, 136680 + ... + 136841.

Almost surely, 2^22155201 is an apocalyptic number.

It is an amenable number.

22155201 is a deficient number, since it is larger than the sum of its proper divisors (10940961).

22155201 is an equidigital number, since it uses as much as digits as its factorization.

22155201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273533 (or 273524 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 22155201 is about 4706.9311658447. The cubic root of 22155201 is about 280.8612977071.

The spelling of 22155201 in words is "twenty-two million, one hundred fifty-five thousand, two hundred one".