22143001 has 2 divisors, whose sum is σ = 22143002. Its totient is φ = 22143000.

The previous prime is 22142987. The next prime is 22143013. The reversal of 22143001 is 10034122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 2027776 = 4485^2 + 1424^2 .

It is a cyclic number.

It is not a de Polignac number, because 22143001 - 2⁷ = 22142873 is a prime.

It is not a weakly prime, because it can be changed into another prime (22143041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071500 + 11071501.

It is an arithmetic number, because the mean of its divisors is an integer number (11071501).

Almost surely, 2^22143001 is an apocalyptic number.

It is an amenable number.

22143001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22143001 is an equidigital number, since it uses as much as digits as its factorization.

22143001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22143001 is about 4705.6350262212. The cubic root of 22143001 is about 280.8097351422.

Adding to 22143001 its reverse (10034122), we get a palindrome (32177123).

The spelling of 22143001 in words is "twenty-two million, one hundred forty-three thousand, one".