1201100203003 has 4 divisors (see below), whose sum is σ = 1203886978848. Its totient is φ = 1198313427160.

The previous prime is 1201100202889. The next prime is 1201100203111. The reversal of 1201100203003 is 3003020011021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201100203003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201100203403) 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, 1393387276 + ... + 1393388137.

It is an arithmetic number, because the mean of its divisors is an integer number (300971744712).

Almost surely, 2^{1201100203003} is an apocalyptic number.

1201100203003 is a deficient number, since it is larger than the sum of its proper divisors (2786775845).

1201100203003 is an equidigital number, since it uses as much as digits as its factorization.

1201100203003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786775844.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 1201100203003 its reverse (3003020011021), we get a palindrome (4204120214024).

The spelling of 1201100203003 in words is "one trillion, two hundred one billion, one hundred million, two hundred three thousand, three".