1001000120200 has 24 divisors (see below), whose sum is σ = 2327325279930. Its totient is φ = 400400048000.

The previous prime is 1001000120171. The next prime is 1001000120203. The reversal of 1001000120200 is 20210001001.

It can be written as a sum of positive squares in 3 ways, for example, as 702187017156 + 298813103044 = 837966^2 + 546638^2 .

It is not an unprimeable number, because it can be changed into a prime (1001000120203) 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, 2502500101 + ... + 2502500500.

Almost surely, 2^{1001000120200} is an apocalyptic number.

1001000120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001000120200 is an abundant number, since it is smaller than the sum of its proper divisors (1326325159730).

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

1001000120200 is a wasteful number, since it uses less digits than its factorization.

1001000120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005000617 (or 5005000608 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1001000120200 its reverse (20210001001), we get a palindrome (1021210121201).

The spelling of 1001000120200 in words is "one trillion, one billion, one hundred twenty thousand, two hundred".