1220403223 has 8 divisors (see below), whose sum is σ = 1315672848. Its totient is φ = 1125332544.

The previous prime is 1220403211. The next prime is 1220403251. The reversal of 1220403223 is 3223040221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220403223 - 2²⁵ = 1186848791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220403223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220403203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36865 + ... + 61642.

It is an arithmetic number, because the mean of its divisors is an integer number (164459106).

Almost surely, 2^1220403223 is an apocalyptic number.

1220403223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1220403223 is a deficient number, since it is larger than the sum of its proper divisors (95269625).

1220403223 is an equidigital number, since it uses as much as digits as its factorization.

1220403223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99473.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1220403223 is about 34934.2700367419. The cubic root of 1220403223 is about 1068.6474373359.

Adding to 1220403223 its reverse (3223040221), we get a palindrome (4443443444).

The spelling of 1220403223 in words is "one billion, two hundred twenty million, four hundred three thousand, two hundred twenty-three".