1220010003 has 12 divisors (see below), whose sum is σ = 1765091640. Its totient is φ = 812022336.

The previous prime is 1220009993. The next prime is 1220010059. The reversal of 1220010003 is 3000100221.

It is a happy number.

It is not a de Polignac number, because 1220010003 - 2⁶ = 1220009939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1220010073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103926 + ... + 115067.

It is an arithmetic number, because the mean of its divisors is an integer number (147090970).

Almost surely, 2^1220010003 is an apocalyptic number.

1220010003 is a deficient number, since it is larger than the sum of its proper divisors (545081637).

1220010003 is a wasteful number, since it uses less digits than its factorization.

1220010003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219618 (or 219615 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1220010003 is about 34928.6415853809. The cubic root of 1220010003 is about 1068.5326504969.

Adding to 1220010003 its reverse (3000100221), we get a palindrome (4220110224).

The spelling of 1220010003 in words is "one billion, two hundred twenty million, ten thousand, three".