1213113110113 has 4 divisors (see below), whose sum is σ = 1276961168560. Its totient is φ = 1149265051668.

The previous prime is 1213113110089. The next prime is 1213113110147. The reversal of 1213113110113 is 3110113113121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213113110113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 63848058427 = 1213113110113 / (1 + 2 + 1 + 3 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213113110173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31924029195 + ... + 31924029232.

It is an arithmetic number, because the mean of its divisors is an integer number (319240292140).

Almost surely, 2^{1213113110113} is an apocalyptic number.

It is an amenable number.

1213113110113 is a deficient number, since it is larger than the sum of its proper divisors (63848058447).

1213113110113 is an equidigital number, since it uses as much as digits as its factorization.

1213113110113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63848058446.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 1213113110113 its reverse (3110113113121), we get a palindrome (4323226223234).

The spelling of 1213113110113 in words is "one trillion, two hundred thirteen billion, one hundred thirteen million, one hundred ten thousand, one hundred thirteen".