1201111304203 has 4 divisors (see below), whose sum is σ = 1207147039600. Its totient is φ = 1195075568808.

The previous prime is 1201111304179. The next prime is 1201111304207. The reversal of 1201111304203 is 3024031111021.

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 1201111304203 - 2³⁷ = 1063672350731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201111304207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3017867400 + ... + 3017867797.

It is an arithmetic number, because the mean of its divisors is an integer number (301786759900).

Almost surely, 2^{1201111304203} is an apocalyptic number.

1201111304203 is a deficient number, since it is larger than the sum of its proper divisors (6035735397).

1201111304203 is an equidigital number, since it uses as much as digits as its factorization.

1201111304203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6035735396.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1201111304203 its reverse (3024031111021), we get a palindrome (4225142415224).

The spelling of 1201111304203 in words is "one trillion, two hundred one billion, one hundred eleven million, three hundred four thousand, two hundred three".