220044001 has 2 divisors, whose sum is σ = 220044002. Its totient is φ = 220044000.

The previous prime is 220043987. The next prime is 220044031. The reversal of 220044001 is 100440022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187827025 + 32216976 = 13705^2 + 5676^2 .

It is a cyclic number.

It is not a de Polignac number, because 220044001 - 2⁹ = 220043489 is a prime.

It is not a weakly prime, because it can be changed into another prime (220044031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110022000 + 110022001.

It is an arithmetic number, because the mean of its divisors is an integer number (110022001).

Almost surely, 2^220044001 is an apocalyptic number.

It is an amenable number.

220044001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220044001 is an equidigital number, since it uses as much as digits as its factorization.

220044001 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 220044001 is about 14833.8801734408. The cubic root of 220044001 is about 603.7213173165.

Adding to 220044001 its reverse (100440022), we get a palindrome (320484023).

The spelling of 220044001 in words is "two hundred twenty million, forty-four thousand, one".