10001200440 has 128 divisors (see below), whose sum is σ = 37407121920. Its totient is φ = 2078169600.

The previous prime is 10001200427. The next prime is 10001200481. The reversal of 10001200440 is 4400210001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 531951 + ... + 550430.

It is an arithmetic number, because the mean of its divisors is an integer number (292243140).

Almost surely, 2^10001200440 is an apocalyptic number.

10001200440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001200440 is an abundant number, since it is smaller than the sum of its proper divisors (27405921480).

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

10001200440 is a wasteful number, since it uses less digits than its factorization.

10001200440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082413 (or 1082409 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 10001200440 its reverse (4400210001), we get a palindrome (14401410441).

The spelling of 10001200440 in words is "ten billion, one million, two hundred thousand, four hundred forty".