1211101000003 has 4 divisors (see below), whose sum is σ = 1211106420720. Its totient is φ = 1211095579288.

The previous prime is 1211100999971. The next prime is 1211101000009. The reversal of 1211101000003 is 3000001011121.

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 1211101000003 - 2⁵ = 1211100999971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211101000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360143 + ... + 2827096.

It is an arithmetic number, because the mean of its divisors is an integer number (302776605180).

Almost surely, 2^{1211101000003} is an apocalyptic number.

1211101000003 is a deficient number, since it is larger than the sum of its proper divisors (5420717).

1211101000003 is an equidigital number, since it uses as much as digits as its factorization.

1211101000003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420716.

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

Adding to 1211101000003 its reverse (3000001011121), we get a palindrome (4211102011124).

The spelling of 1211101000003 in words is "one trillion, two hundred eleven billion, one hundred one million, three", and thus it is an aban number.