1211030130203 has 4 divisors (see below), whose sum is σ = 1222140498480. Its totient is φ = 1199919761928.

The previous prime is 1211030130181. The next prime is 1211030130239. The reversal of 1211030130203 is 3020310301121.

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 1211030130203 - 2³² = 1206735162907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211030130293) 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, 5555183975 + ... + 5555184192.

It is an arithmetic number, because the mean of its divisors is an integer number (305535124620).

Almost surely, 2^{1211030130203} is an apocalyptic number.

1211030130203 is a deficient number, since it is larger than the sum of its proper divisors (11110368277).

1211030130203 is a wasteful number, since it uses less digits than its factorization.

1211030130203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110368276.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1211030130203 its reverse (3020310301121), we get a palindrome (4231340431324).

The spelling of 1211030130203 in words is "one trillion, two hundred eleven billion, thirty million, one hundred thirty thousand, two hundred three".