22110001 has 2 divisors, whose sum is σ = 22110002.
Its totient is φ = 22110000.
The previous prime is 22109993. The next prime is 22110017. The reversal of 22110001 is 10001122.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 21864976 + 245025 = 4676^2 + 495^2
It is a cyclic number.
It is not a de Polignac number, because 22110001 - 23 = 22109993 is a prime.
It is not a weakly prime, because it can be changed into another prime (22110031) 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, 11055000 + 11055001.
It is an arithmetic number, because the mean of its divisors is an integer number (11055001).
Almost surely, 222110001 is an apocalyptic number.
It is an amenable number.
22110001 is a deficient number, since it is larger than the sum of its proper divisors (1).
22110001 is an equidigital number, since it uses as much as digits as its factorization.
22110001 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 4, while the sum is 7.
The square root of 22110001 is about 4702.1272845384.
The cubic root of 22110001 is about 280.6701676627.
Adding to 22110001 its reverse (10001122), we get a palindrome (32111123).
The spelling of 22110001 in words is "twenty-two million, one hundred ten thousand, one".