22150001 has 2 divisors, whose sum is σ = 22150002. Its totient is φ = 22150000.

The previous prime is 22149977. The next prime is 22150061. The reversal of 22150001 is 10005122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 4844401 = 4160^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 22150001 - 2⁶ = 22149937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22150061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11075000 + 11075001.

It is an arithmetic number, because the mean of its divisors is an integer number (11075001).

Almost surely, 2^22150001 is an apocalyptic number.

It is an amenable number.

22150001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22150001 is an equidigital number, since it uses as much as digits as its factorization.

22150001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 22150001 is about 4706.3787565388. The cubic root of 22150001 is about 280.8393225356.

Adding to 22150001 its reverse (10005122), we get a palindrome (32155123).

The spelling of 22150001 in words is "twenty-two million, one hundred fifty thousand, one".