1002000221200 has 120 divisors (see below), whose sum is σ = 2627265906720. Its totient is φ = 364209100800.

The previous prime is 1002000221107. The next prime is 1002000221237. The reversal of 1002000221200 is 21220002001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10587691 + ... + 10681909.

It is an arithmetic number, because the mean of its divisors is an integer number (21893882556).

Almost surely, 2^{1002000221200} is an apocalyptic number.

1002000221200 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 1002000221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313632953360).

1002000221200 is an abundant number, since it is smaller than the sum of its proper divisors (1625265685520).

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

1002000221200 is a wasteful number, since it uses less digits than its factorization.

1002000221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96665 (or 96654 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1002000221200 its reverse (21220002001), we get a palindrome (1023220223201).

The spelling of 1002000221200 in words is "one trillion, two billion, two hundred twenty-one thousand, two hundred".