1000204121444 has 36 divisors (see below), whose sum is σ = 1925100666300. Its totient is φ = 454365468480.

The previous prime is 1000204121341. The next prime is 1000204121447. The reversal of 1000204121444 is 4441214020001.

It can be written as a sum of positive squares in 2 ways, for example, as 476445062500 + 523759058944 = 690250^2 + 723712^2 .

It is not an unprimeable number, because it can be changed into a prime (1000204121447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188702 + ... + 1426890.

Almost surely, 2^{1000204121444} is an apocalyptic number.

It is an amenable number.

1000204121444 is a deficient number, since it is larger than the sum of its proper divisors (924896544856).

1000204121444 is a wasteful number, since it uses less digits than its factorization.

1000204121444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239884 (or 1239871 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1000204121444 its reverse (4441214020001), we get a palindrome (5441418141445).

The spelling of 1000204121444 in words is "one trillion, two hundred four million, one hundred twenty-one thousand, four hundred forty-four".