22071601 has 2 divisors, whose sum is σ = 22071602. Its totient is φ = 22071600.

The previous prime is 22071583. The next prime is 22071607. The reversal of 22071601 is 10617022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 7017201 = 3880^2 + 2649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22071601 is a prime.

It is not a weakly prime, because it can be changed into another prime (22071607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11035800 + 11035801.

It is an arithmetic number, because the mean of its divisors is an integer number (11035801).

Almost surely, 2^22071601 is an apocalyptic number.

It is an amenable number.

22071601 is a deficient number, since it is larger than the sum of its proper divisors (1).

22071601 is an equidigital number, since it uses as much as digits as its factorization.

22071601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 22071601 is about 4698.0422518321. The cubic root of 22071601 is about 280.5075869381.

Adding to 22071601 its reverse (10617022), we get a palindrome (32688623).

The spelling of 22071601 in words is "twenty-two million, seventy-one thousand, six hundred one".