1001200011000 has 128 divisors (see below), whose sum is σ = 3569993256960. Its totient is φ = 228845712000.

The previous prime is 1001200010917. The next prime is 1001200011013. The reversal of 1001200011000 is 1100021001.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1001200011000.

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, 23817096 + ... + 23859095.

It is an arithmetic number, because the mean of its divisors is an integer number (27890572320).

Almost surely, 2^{1001200011000} is an apocalyptic number.

1001200011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001200011000 is an abundant number, since it is smaller than the sum of its proper divisors (2568793245960).

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

1001200011000 is a wasteful number, since it uses less digits than its factorization.

1001200011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47676222 (or 47676208 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 1001200011000 its reverse (1100021001), we get a palindrome (1002300032001).

It can be divided in two parts, 100120001 and 1000, that added together give a palindrome (100121001).

The spelling of 1001200011000 in words is "one trillion, one billion, two hundred million, eleven thousand".