220400003 has 2 divisors, whose sum is σ = 220400004. Its totient is φ = 220400002.

The previous prime is 220399999. The next prime is 220400021. The reversal of 220400003 is 300004022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220400003 - 2² = 220399999 is a prime.

It is a super-2 number, since 2×220400003² = 97152322644800018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220400603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110200001 + 110200002.

It is an arithmetic number, because the mean of its divisors is an integer number (110200002).

Almost surely, 2^220400003 is an apocalyptic number.

220400003 is a deficient number, since it is larger than the sum of its proper divisors (1).

220400003 is an equidigital number, since it uses as much as digits as its factorization.

220400003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 220400003 is about 14845.8749489547. The cubic root of 220400003 is about 604.0467222238.

Adding to 220400003 its reverse (300004022), we get a palindrome (520404025).

The spelling of 220400003 in words is "two hundred twenty million, four hundred thousand, three".