1100001011203 has 4 divisors (see below), whose sum is σ = 1100012472000. Its totient is φ = 1099989550408.

The previous prime is 1100001011201. The next prime is 1100001011209. The reversal of 1100001011203 is 3021101000011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1100001011203 - 2¹ = 1100001011201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1100001011203.

It is not an unprimeable number, because it can be changed into a prime (1100001011201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5585203 + ... + 5778796.

It is an arithmetic number, because the mean of its divisors is an integer number (275003118000).

Almost surely, 2^{1100001011203} is an apocalyptic number.

1100001011203 is a deficient number, since it is larger than the sum of its proper divisors (11460797).

1100001011203 is an equidigital number, since it uses as much as digits as its factorization.

1100001011203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11460796.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 1100001011203 its reverse (3021101000011), we get a palindrome (4121102011214).

The spelling of 1100001011203 in words is "one trillion, one hundred billion, one million, eleven thousand, two hundred three".