1001220201200 has 30 divisors (see below), whose sum is σ = 2405431534344. Its totient is φ = 400488080320.

The previous prime is 1001220201193. The next prime is 1001220201203. The reversal of 1001220201200 is 21020221001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001220201203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1251524852 + ... + 1251525651.

Almost surely, 2^{1001220201200} is an apocalyptic number.

1001220201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001220201200 is an abundant number, since it is smaller than the sum of its proper divisors (1404211333144).

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

1001220201200 is a wasteful number, since it uses less digits than its factorization.

1001220201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503050521 (or 2503050510 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1001220201200 its reverse (21020221001), we get a palindrome (1022240422201).

The spelling of 1001220201200 in words is "one trillion, one billion, two hundred twenty million, two hundred one thousand, two hundred".