1011220003 has 4 divisors (see below), whose sum is σ = 1012440640. Its totient is φ = 1009999368.

The previous prime is 1011219991. The next prime is 1011220013. The reversal of 1011220003 is 3000221101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3000221101 = 54493 ⋅55057.

It is a cyclic number.

It is not a de Polignac number, because 1011220003 - 2¹⁷ = 1011088931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011220013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609075 + ... + 610732.

It is an arithmetic number, because the mean of its divisors is an integer number (253110160).

Almost surely, 2^1011220003 is an apocalyptic number.

1011220003 is a deficient number, since it is larger than the sum of its proper divisors (1220637).

1011220003 is an equidigital number, since it uses as much as digits as its factorization.

1011220003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220636.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1011220003 is about 31799.6855802066. The cubic root of 1011220003 is about 1003.7260999351.

Adding to 1011220003 its reverse (3000221101), we get a palindrome (4011441104).

The spelling of 1011220003 in words is "one billion, eleven million, two hundred twenty thousand, three".