1003221500100 has 144 divisors (see below), whose sum is σ = 3013012321536. Its totient is φ = 257541120000.

The previous prime is 1003221500087. The next prime is 1003221500107. The reversal of 1003221500100 is 10051223001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1003221500100.

It is not an unprimeable number, because it can be changed into a prime (1003221500107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 276900 + ... + 1443300.

Almost surely, 2^{1003221500100} is an apocalyptic number.

1003221500100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1003221500100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506506160768).

1003221500100 is an abundant number, since it is smaller than the sum of its proper divisors (2009790821436).

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

1003221500100 is a wasteful number, since it uses less digits than its factorization.

1003221500100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166526 (or 1166519 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 1003221500100 its reverse (10051223001), we get a palindrome (1013272723101).

The spelling of 1003221500100 in words is "one trillion, three billion, two hundred twenty-one million, five hundred thousand, one hundred".