1001331220200 has 48 divisors (see below), whose sum is σ = 3104126784480. Its totient is φ = 267021658560.

The previous prime is 1001331220181. The next prime is 1001331220237. The reversal of 1001331220200 is 20221331001.

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 1001331220200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834442084 + ... + 834443283.

It is an arithmetic number, because the mean of its divisors is an integer number (64669308010).

Almost surely, 2^{1001331220200} is an apocalyptic number.

1001331220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001331220200 is an abundant number, since it is smaller than the sum of its proper divisors (2102795564280).

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

1001331220200 is a wasteful number, since it uses less digits than its factorization.

1001331220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668885386 (or 1668885377 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1001331220200 its reverse (20221331001), we get a palindrome (1021552551201).

The spelling of 1001331220200 in words is "one trillion, one billion, three hundred thirty-one million, two hundred twenty thousand, two hundred".