1220000003 has 4 divisors (see below), whose sum is σ = 1220349240. Its totient is φ = 1219650768.

The previous prime is 1219999993. The next prime is 1220000027. The reversal of 1220000003 is 3000000221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3000000221 = 43 ⋅69767447.

It is a cyclic number.

It is not a de Polignac number, because 1220000003 - 2¹⁴ = 1219983619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220000503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169325 + ... + 176382.

It is an arithmetic number, because the mean of its divisors is an integer number (305087310).

Almost surely, 2^1220000003 is an apocalyptic number.

1220000003 is a deficient number, since it is larger than the sum of its proper divisors (349237).

1220000003 is an equidigital number, since it uses as much as digits as its factorization.

1220000003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349236.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 1220000003 is about 34928.4984360908. The cubic root of 1220000003 is about 1068.5297310247.

Adding to 1220000003 its reverse (3000000221), we get a palindrome (4220000224).

The spelling of 1220000003 in words is "one billion, two hundred twenty million, three", and thus it is an aban number.