1003221012 has 48 divisors (see below), whose sum is σ = 2424844800. Its totient is φ = 322439040.

The previous prime is 1003220989. The next prime is 1003221013. The reversal of 1003221012 is 2101223001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003221013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343414 + ... + 346322.

It is an arithmetic number, because the mean of its divisors is an integer number (50517600).

Almost surely, 2^1003221012 is an apocalyptic number.

1003221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1003221012 is an abundant number, since it is smaller than the sum of its proper divisors (1421623788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1003221012 is a wasteful number, since it uses less digits than its factorization.

1003221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936 (or 3934 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1003221012 is about 31673.6643285869. The cubic root of 1003221012 is about 1001.0725199564.

Adding to 1003221012 its reverse (2101223001), we get a palindrome (3104444013).

The spelling of 1003221012 in words is "one billion, three million, two hundred twenty-one thousand, twelve".