1220550003 has 24 divisors (see below), whose sum is σ = 1906452288. Its totient is φ = 749536512.

The previous prime is 1220549977. The next prime is 1220550007. The reversal of 1220550003 is 3000550221.

It is a happy number.

It is not a de Polignac number, because 1220550003 - 2⁵ = 1220549971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220550007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77676 + ... + 92057.

It is an arithmetic number, because the mean of its divisors is an integer number (79435512).

Almost surely, 2^1220550003 is an apocalyptic number.

1220550003 is a deficient number, since it is larger than the sum of its proper divisors (685902285).

1220550003 is a wasteful number, since it uses less digits than its factorization.

1220550003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169803 (or 169800 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1220550003 is about 34936.3707760265. The cubic root of 1220550003 is about 1068.6902783085.

The spelling of 1220550003 in words is "one billion, two hundred twenty million, five hundred fifty thousand, three".