22420201 has 2 divisors, whose sum is σ = 22420202. Its totient is φ = 22420200.

The previous prime is 22420183. The next prime is 22420207. The reversal of 22420201 is 10202422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 9603801 = 3580^2 + 3099^2 .

It is a cyclic number.

It is not a de Polignac number, because 22420201 - 2²¹ = 20323049 is a prime.

It is not a weakly prime, because it can be changed into another prime (22420207) 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 as a sum of consecutive naturals, namely, 11210100 + 11210101.

It is an arithmetic number, because the mean of its divisors is an integer number (11210101).

Almost surely, 2^22420201 is an apocalyptic number.

It is an amenable number.

22420201 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420201 is an equidigital number, since it uses as much as digits as its factorization.

22420201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22420201 is about 4734.9974656804. The cubic root of 22420201 is about 281.9766633942.

Adding to 22420201 its reverse (10202422), we get a palindrome (32622623).

The spelling of 22420201 in words is "twenty-two million, four hundred twenty thousand, two hundred one".