1213043130011 has 4 divisors (see below), whose sum is σ = 1232929083024. Its totient is φ = 1193157177000.

The previous prime is 1213043129989. The next prime is 1213043130049. The reversal of 1213043130011 is 1100313403121.

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-1213043130011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213043130911) 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, 9942976415 + ... + 9942976536.

It is an arithmetic number, because the mean of its divisors is an integer number (308232270756).

Almost surely, 2^{1213043130011} is an apocalyptic number.

1213043130011 is a deficient number, since it is larger than the sum of its proper divisors (19885953013).

1213043130011 is an equidigital number, since it uses as much as digits as its factorization.

1213043130011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19885953012.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1213043130011 its reverse (1100313403121), we get a palindrome (2313356533132).

The spelling of 1213043130011 in words is "one trillion, two hundred thirteen billion, forty-three million, one hundred thirty thousand, eleven".